Mars Metals makes decent keels, no doubt about it. But they are a casting
facility, not yacht designers.

Run any of your idea past a yacht designer / naval architect to see if:

- the internal structure can take it
- the modification will improve performance
etc.

I think it would be a very hard to make a better keel with add on bulbs and
*improve* performance. More likely to just make things a bit worse. On
some boats you may be hard pressed to tell the difference


--
Evan Gatehouse

you'll have to rewrite my email address to get to me
ceilydh AT 3web dot net
(fools the spammers)