Polyethylene for fish house skids

[JSK76]

Looking to put some polyethylene on the bottom of the skids on the small shack I'm building. I've read the best stuff for this UHMW or Ultra-High-Mole-Weight. I found some sheets of Hi-Density polyethylene at the save you big money store but not sure how it would hold up In the cold? I would go with the UHMW if I could find some.

[bak2MN]

zthere is a place in Fargo that I will be getting some from when I find the number I will let u know.

[Carpenter]

I picked up some 3/4 x 4 x 48 online and works well. Search uhmw and peachtree. Its a wood working HSOforum.

[JSK76]

Good news is, my buddy had some that 5.5" that he gave me and it's enough to do the job. The issue that I'm running into now is it has these slots cut into it. I could cut it down to 3.5 inches and the slots would be gone but I made 4" wide metal skis that bolt to the skids first. So I have a few options 1. Cut it to 4" and use it with the slots. 2. Cut it to 3.5 and have it undersized 1/4" on each side. 3. Leave it the 5.5" size it is and have it 3/4" on each side of the ski (left side in pic) and have it oversized for extra floatation. 4. Cut it to 3" without the slots and eliminated the metal ski altogether and screw it right to the 1.5" wood skid edge and have 1" overhang on each side. The metal skis weigh in at 25lbs so not using them would really help on saving some weight. Im concerned if I leave the slots they could really cause drag?

[JSK76]

What's the best way to attach the polyethylene to the skid as far as allowing room for expansion and contraction with different temps? I have a countersink bit but I would think it would need to be slotted also.