So far I've tried:
1. Food grade silicone spray, but at $5.00 a can X 4 cans that's a lot of coin, and it *barely" helps.
2. A block of paraffin rubbed in. While inexpensive I really don't feel like spending the 20 minutes of hard labor that it takes. It didn't really seem to work that well either.
I haven't tried:
Vaseline is really cheap and it would probably work great - except that it will attract tons of dirt and eventually make a huge mess.
Synthetic grease smeared on lightly would probably be awesome, but once again the mess factor comes into play.
I know I can buy various overpriced UHMW strips, bunk glides and the like, but I've got almost 80 feet of bunks to cover (tritoon) and it gets silly expensive really quick. If I was loading/unloading a lot they would make sense, but I'm only using my boat four times a year.
I've been thinking seriously about getting one of those huge bottles of Dawn dish washing liquid at Costco and putting an "S" shaped bead down the center of each bunk prior to loading. Easy, quick, cheap and eco-friendly as well. Wetting the bunks first would of course be a huge help.
Any other ideas?

