I am starting on my centerboard for a 25' sharpie - 7' long, 30" high, and 2" thick out of white oak all bolted and drifted and epoxied together. Probably gonna weigh upwards of 150 lbs - fairly heavy piece of equipment. However, Chapelle and the others all show a lead insert but don't say how much weight we're talking for how big a board.
So, for a board of this size - a boat of this size, how much weight is about right? I'm thinking maybe 40 - 50 lbs, but that's just a guess.
Any ideas on how much weight to add would be appreciated.
Also, am I correct that I am going to need some kind of winch to get it up (careful here) or will I be able to get it into the top of the slot by hand?