two questions: 1. we have been using shock cords to tie up the mainsial around the boom for storage. seems too tight and harsh on sail, why not use velcro straps, can adjust tension without too much pressure on sail. thoughts?? 2. got mice into boat in storage and chewed parts of mainsail. we set traps. but wondering if some other way of preventing entrance into boat so they don't nail the mainsail again advice?