I leave my Wave on the lake shore for the winter, covered; but I do hang the mast sections & rudders/tillers in my garage. I also lay my kayak upside-down on the cross bars, to form a tent with the tarp, so the snow doesn't lie on the trampoline.
If you have to leave the hulls outside, just make sure they're drained, and secure the boat and tarp against the strong winter winds. I'm guessing the weather on Lake Huron is more harsh than what we get in central Indiana.
What - Me Worry?
2006 Hobie Wave