Sunday, 4:40pm. I tapped in a three-footer on 18 and picked my ball out of the cup.

Thirty-six holes on Saturday. Eighteen more on Sunday. Walked every one of them. Carried my own bag.

Dave was standing at the edge of the green with his arms crossed.

Dave is the guy who told me to "toughen up, Nancy" on our golf trip last fall. The trip where my feet gave out on Day 3 and my buddies pushed me through the airport in a wheelchair.

"Alright," he said. "What did you do?"

Mike guessed first. "New shoes."

"Same shoes," I said. "Same $220 shoes I wore on the trip."

Tommy guessed orthotics. Dave guessed I'd been sneaking a cart on Saturdays.

Nope. Nope.

Same shoes. Same course. Same 52-year-old feet. One change underneath.

So I told them what I'm about to tell you.

Because I spent close to a thousand dollars on the usual fixes before I understood why none of them worked. If you're shopping for one right now, this might save you the money.

After the wheelchair, I did what every golfer does.

I asked the internet.

So I did all of it.

I already owned the $220 golf shoes. I bought a spikeless pair. Then a waterproof pair that was on sale. Every one felt like a cloud in the store. By the 10th hole, my dogs were barking anyway.

By June, my wife had stuck a note on the garage shelf that said "PICK ONE."

Next, store insoles off the wall. They didn't do squat.

Then custom orthotics from a podiatrist. $280. They cast my feet and everything. Hard as a dinner plate. Great for standing. Brutal by the 12th hole.

Then the little stuff. Compression socks. A golf ball to roll my feet on at night. Two Advil on the 9th tee.

Here's the honest part.

None of that advice is wrong.

It's just incomplete. And the night I figured out why, everything I'd bought finally made sense.

I was boxing up the $220 shoes to sell them online.

I pulled the insole out to check the size.

And I just stood there holding it.

It was as thin as a mouse pad. I held it up to the garage light, and I could almost see through it.

Golf shoes put their engineering into the sole and the spikes, for grip and stability through the swing. That's what they're built for.

The insole on top is usually a thin cover sheet.

That's why every pair felt great in the store. Fifty steps on carpet, and anything feels good.

But a walking round is about 18,000 steps on grass, hills and cart paths.

One step on a thin liner doesn't hurt.

18,000 of them do.

Then I lined up everything I'd bought on the workbench and looked at it like a fitting.

Every step of a walking round asks three things of what's under your foot.

Hold your arch up, especially when you load into your swing.

Take the hit when your heel comes down.

Keep your heel steady instead of sliding around.

Every fix I'd tried did one of those jobs, at most.

The store insoles were soft. That was the whole selling point. But soft foam squishes under your weight. One soft layer, asked to do all three jobs at once, ends up doing none of them well.

The orthotics went the other way. Plenty of golfers swear by them, and they're great at support. Mine were all support and no give.

The shoes had a great sole and a cover sheet on top.

And the push cart? It's a good tool. It takes the bag off your shoulders. But your feet still take every one of those 18,000 steps.

I never needed softer, or harder, or more expensive. I needed all three jobs done under my foot at the same time, by separate layers.

I didn't think that existed outside a podiatrist's office.

Then Tommy, the guy who filmed me in the wheelchair, texted me a link.

"Saw this and thought of your squeaky wheel."

The link was to a pair of insoles called Naprelle Cloud Insoles.

And the first thing I saw was that they aren't one layer.

They're three layers, and each one has its own job.

On top, there's a side arch support. A raised contour along the inner side of your midfoot that holds your arch up instead of letting it collapse, including when you load into your swing.

In the middle, there's an enclosed honeycomb gel layer. Rows of small gel cells that take the hit when your heel comes down and spread it across the grid.

And on the bottom, there's a memory foam base with a deep U-shaped heel cup. It cradles the back and sides of your heel, so it stays centered instead of sliding around.

I read it twice.

Something to hold my arch up. Something to take the hit. Something to cup my heel.

That was the exact list I'd made on the workbench the night before.

That's what sold me.

Then I saw the number:

In Naprelle's in-house test, the full insole absorbed 56% more shock than a regular flat stock insole.

A regular flat stock insole. The same mouse pad I'd just pulled out of my $220 shoes.

The part I liked most was that I didn't have to give up my shoes.

They replace the insole inside the golf shoes you already wear, spiked or spikeless. You trim them to fit at home. No casting, no appointment.

That Saturday, I put them in the $220 shoes and walked 18 at my home course.

No cart. No Advil on the 9th tee.

I kept waiting for the 10th hole.

Nothing.

On 18, I realized I hadn't thought about my feet once the whole round. My grip felt the same. My spikes felt the same. My swing felt the same, just with my heel staying put.

Sunday, I walked 18 again. Back to back. I hadn't done that in over a year.

Two weeks later, it rained on the back nine. I hand washed them in the sink that night, let them air dry, and wore them again Saturday.

Back on the 18th green, Dave still didn't believe me.

So in the clubhouse, I drew it out for him on a bar napkin.

Here's the clean version.

Golf shoes, store insoles and orthotics vary by brand and model. These are general categories based on my experience, not lab tests.

Dave ordered a pair that night from his phone at the bar.

And I'm not the only one who noticed the difference. Here's what buyers say on the Naprelle product page:

Individual experiences vary.

Here's how I'd buy them if I were starting over.

Remember the garage shelf? Spiked, spikeless, waterproof, my summer pair, and the old ones in the trunk. Every one of them came with the same thin cover sheet.

So I got the bundle. Five pairs, one for every pair of golf shoes, so I'm never swapping insoles in the parking lot.

My wife finally took the "PICK ONE" note down.

My advice: If you walk your rounds, skip the next pair of golf shoes. Put three layers under the ones you already own, one pair for every pair you rotate. The bundle is the only way I'd do it.

Naprelle Cloud Insoles

Side arch support, enclosed honeycomb gel and a memory foam base with a U-shaped heel cup.

Men's 5 to 15. Women's 6 to 16. Trim to fit.

Buy 3 Get 2 Free: 5 pairs, $15.99 a pair. BEST VALUE

Buy 2 Get 1 Free: 3 pairs, $19.99 a pair, free shipping.

Single pair: $30.

Try them for 90 days. Walk your rounds in them. If they're not for you, you're covered by Naprelle's 90-day guarantee.

Next September, same four guys, same coast.

Day 4 is the course I watched through a clubhouse window last year.

Tommy says he's bringing the wheelchair video to dinner. That's fine.

This time, I'm walking every hole.