I'm a little late to the game
, but while your at it you might want to check to see if the keel
is symetrical in shape, and the correct shape.
I've seen some keels that were way off side to side, on one of my previous boats that had a custom keel
I made patterns to mimic what the shape should have been and used them to guide my application of fairing compound and then while sanding and shaping. That keel was pretty close to start with but was off enough to make the boat
point better on a port tack than on starboard. At first I thought it was the rig, so I went through the rig completely to ensure that the rake, centering and column were spot on (which improved tacking right off) but still had the issue of pointing higher on one tack than another.
Once I faired the keel and matched it side to side and to the centerline of the boat
it pointed higher on both tacks, which gained a couple seconds a mile and also was fairly even port to starboard in pointing. If your going to do the work
it's not much more to make sure its symetrical side to side, the templates will keep it simple.
Remember, it's a hydrodynamic wing, they have a particular shape for a reason.
The worst keel I've seen was way off on centerline and no where near symetrical side to side, I won't mention the maker, to avoid any blowback other than to say it was a "first", which surprised me since it is supposed to be a performance model. This was an early 2000's model.
When you sighted the boat when on the hard
, looking from the rudder
through the bow centerline it was easy to see, it wasn't aligned with the centerline of the hull
, but had an apparent direction to port, about 2 degrees off. Don't know if it was from the original casting or from the mounting, when stripped the casting was quite rough, it looked as if it were cast while lying horizontally, but that's just my guess.
It took almost 2-1/2" of fairing on the starboard side leading edge to make it symetrical in shape and much grinding and sanding to get the correct shape, but once done and back in the water
the improvement was immediately noticeable.
Something to consider if your going to the trouble of stripping the keel to coat it. Most aren't that far off and just need a little faring and shaping, it's not really much more work
than what your already doing. The shaping on my older boat was about 10 hours of work, not counting the 2 hours it took to make the cardboard templates.