I plan to keep my boat outside (and out of the water) this winter. It will be in an apartment parking lot. How safe/unsafe is this? What precautions should I take? What do I need to look out for? What are some potential dangers?<br /><br />Also, it currently has a snap, canvas cover. Should I purchase a custom fit cover, or can I just put tarp over it?<br /><br />Thanks!!!