We're closing on a new 306 this week. Having read up on the subject, we plan to close all thru-hull fittings each time we leave the boat. I'm not intending to re-open a discussion on the advisability of this, having read quite a few long ones in the archive. Was just wondering: how much work is this on the 306? I seem to recall that one of the thru-hulls (head intake?) is aft of the engine, near the shaft. I'm hoping the access to this is through the covers over the aft berth, and not only via the rear engine panel. Thanks for your help!Jay