Originally Posted by SlowButSteady
Since these guys are cutting off part of the keel, in preparation to adding a bulb, the resultant is likely to provide less lift. Remember, the keel of the boat provides both a righting moment and fluid dynamic lift, with the latter giving the boat its pointing ability. Reduce the foil by 15 or 20 percent, an you are likely to reduce the lift provided by the keel by 15 or 20 percent. Sure, the boat might have a similar, or even greater, righting moment as it did before the "surgery". however, it's also likely to loose some pointing ability unless the keel is somehow further modified (which is probably much more difficult).
The OP said nothing about cutting off any keel.
He wants to add to the bottom.
Originally Posted by micheck
One additional question and then I will go in a corner and think!
I am 'considering' adding a lead 'boot' to the bottom of my fin keel; this would serve as a sacrificial element protecting my fiberglass keel with internal balast and would provide additional righting moment that would help 'stand up' the boat. I am looking at an additional 500# on a 12000# sailboat with a current ballast of 4000#.
I have, however, read that standing a boat up with additional balast is a good thing in strong winds, it is detrimental to the performance in light winds. I'm confused - I thought that standing up a sailboat was a good idea. Good/bad - Yes/No - Why?
It's funny how stuff Gets misread. It's just the link I provided gives that option, but not necessary.
As far as leaks, once it's bolted on, one can just fair-in and FG/epoxy over the new bulb just like it were part of the original keel. Simple as that!