We've got a 2004 Hunter 41 and cover it with a mishmash of tarps. It is time consuming and they often do not survive upstate New York winters. We are considering a nylon or polyester winter cover for next year (canvas is way to heavy to manage). Does anyone have any recommendations for how much of the boat really needs to be covered? We are considering an over the boom cockpit cover instead of a full cover. We have never had any leakage from the hatches and feel a full cover is overkill. Thoughts?