J/30 Class Association Forums J/30 Forum The Boat, Sails and Equipment mast foot

That's the standard size hole not the big one. Mast boot tape will do the job. But jib sheets tend to break it down. So I taped it, than covered it with something like this: A practical mast boot. Instead of truck tire inner tube I used a piece of sunbrella fabric.

A 7 MB PDF version with a better view of the above on page 56 here.