LMC is up the New River just south of Bradford's and Roscioli's. Broward Marine is down near the Dania cutoff.
There are a number of full
service yards in Ft. Lauderdale. I'd suggest Riverbend Marina as they seem to have more sailboats than
power boats. LMC, Roscioli, Bradfords, and others are more megayacht geared although all of them will take your
money.
You can also try Playboy Marine, one of the last do it yourself yards in South
Florida. They have shops on premises or you can get someone in to do the work. IMO, Playboy's probably the cheapest yard around.