Bunk Slicks for trailer?

[Visco]

I have also read that PVC Trim Board works well.

Anyone using PVC Trim board?

This is the article I was reading:
PVC may not be quite as slippery as nylon, but while looking at a piece of 1x4" PVC trim board, it occurred to me that it would still make a good bunk glide: it is easy to work, thick enough to countersink the screw heads, and best of all, would provide little friction when I was either launching or pulling the boat out of the water.

I bought a piece of the trim board and twenty 1 1/2" stainless steel screws at my local building supply yard. That's all I needed, and at $30 dollars, it was considerably cheaper than any commercially made bunk glides I had seen.

The piece of PVC trim I bought was 18' long and the bunks on my trailer are about 7' each, so first I cut it to length. Then I cut a slight bevel on the front end of the pieces and lopped the top corner off the rear ends. I then sanded both cuts, making the rear into a rounded bullnose. I also planed and sanded down both top sides for the length of the boards so there were no sharp corners in contact with the hull of my boat.

Thoughts?