RS Snowflap is a pain in the butt!
I just rode 450 miles in Canada with sub-zero temps and the flap was a constant pain in the butt. The snow gets between the flap and the aluminum plate (with the 3 oval holes), melts from the muffler, and then creates a huge ice ball that weighs you down and deforms the flap. The only solution to this problem is to plug up those three oval holes, or add a rear heat exchanger becuase the cross tube just doesn't have enough area to melt these ice balls. I suppose a rear heat exchanger would be the best option becasue the Vector motor does run hot in marginal conditions, even when the air temps are below zero! Still, this sled is awesome...
Have fun,
Greg