There are three reasons that I can think of to seal up the slot.
1. board is not really necessary, it only aids in the pointing ability so they eliminated the worry.
2.board is really stuck or missing altogether so they opted to seal up the slot instead of the expense to repair/replace
3. the tube for the pendant leaks to the point where they felt safer glassing over the slot.
I have contemplated sealing mine over just to simplify things, but I find myself using it from time to time so I haven't. I have heard of other T-37's doing it without issue so maybe this boat you're looking at is one?
1977 T-37 CB
Last edited by ehmanta; 05-03-2011 at 07:38 AM.