Clean Shrink Wrapped boat?

[Dave M]

This is the 1st year for having my boat shrink wrapped, getting old. Do you clear the snow off or leave it. Does the shrink warp get brittle. On one thought is if I use a broom I'll poke a hole in the shrink warp. If I leave it turns to ice and weight will break the shrink wrap. What do Marinas do with all their boats. My boat is parked in my parking area under some power lines so it does get some sun.

Dave M