I did remember to take a couple while working on the project which was more work than I thought it might be.

The total bill came to $375 clams. Stainless hardware alone was $85 and I did not even use 316 stainless (used 305), lumber $37, 120'x3"x1/2" of UHMW $225 including shipping, and waterproof construction adhesive $17 (Loctite PL Premium polyurethane) which I decided was good enough since I placed a pair of screws every 10" countersunk 3/16". The real deal to glue UHMW to treated wood would have been about $170!!
I personally feel good about the project since the original wood was falling apart after only 4 years of intermittent dipping. This stuff is not wrapped in carpet and appears to be completely dry after the very short drive home from the marina where we launch.
I'll at this point provide a big warning to anyone that does this. This UHMW is extremely slippery! I've used it in big telescope bearings for years. The first time I drove the boat up on the trailer and cut the engine, it slid right back into the lake! And our ramp is not very steep. I had to keep the engine running at about 2k rpm to hold it against the stops of the trailer while I went up and hooked up the strap. There is a lot of room for a mishap doing this if something were to go south.
We went back out yesterday to make a concert across the lake and I made sure to get the boat well into the water before unhooking. When we got back very late last night, I was able to very easily drive the boat up unto the trailer. I've always loaded with only a short piece of the bunks in the water and this makes it very easy, even in a stiff crosswind.