Yah, that's pretty much it. Disconnect the shrouds and carry it down to the water. Get a friend to help hold one end and just push it down. Obviously there will be a little air around the sheave(s) at teh top of the mast but after that escapes you shouldn't see any more bubbles coming out. If you do, then you'll want to re-seal it. I did that last year. Drill out the rivets around the mast head (or base, depending on what side is leaking.) Pull out the old plug which is probably all crappy if it's been leaking and wet for who knows how long.... then get a fat pool noodle and (cut to fit) and shove it into the mast a little ways. Then cover with a thick coat of silicone (I used maybe 1/4-1/3 of a tube in a glue gun). When that cures ain't nothin' getting through for years. Unless you have to tear it out for some reason later. 8)~