I used to date a girl who was knick named the tarp hole.
not as cheap as the other guys suggestion but get an evolution cover...you won't be sorry not sure if he has layout for the new mojo. i pulled my boat for 3 hours in a heavy down pour and carpet was dry when i got to lake cumberland
Overtons Has Bimini Bandage that I used on an old Cover that I used to Cover my Cover! It worked pretty well on a Large Rip!