Re: How to deal with snow on boat?
I use a "quality" heavy duty tarp. 14x14 weave or better. Make sure your frame work is solid before putting the tarp on. I use 2x4's. Once the frame is up, I use the shrink wrap "rope" which is more like banding. I go from the ridge to the cleats/bow rail and tie it piano tight. This will keep the tarp tight and less chance for the snow to form a pocket.
As far as the framing and chafing the tarp, here are some tips:
At edges, ends etc of your frame where the tarp will touch, wrap in some old carpet. Tape it up well.
Use the foam sill gasket (comes in a roll) tape it along the top ridge of your frame.
Use the same foam sill gasket. to wrap any edges of the boat the tarp will touch (ie: I use it on the corners of my radar arch)
Get the tarp as tight as you can, you don't want it flapping.
Use more rope!