[Sonar] Keel fairing

[markkoch]

I was not planning on fooling with my keel, but now that it is on the 
trailer I see that there are some areas of blistering where the fairing 
compound has pulled away from the lead.  I popped a few of them and 
there was water behind.  The material on the keel seems like auto body 
filler.  Kind of plasticy with some flexibility.  Some places it is very 
thin and other places one or two sixteenths inches thick.

I hate to remove it all because then I have no reference points to level 
back too.  But if I leave the sound areas alone, they might blister next 
year.

Only the lead portion of the hull has this problem--not the fiberglass 
hull itself.  One side of the keel is fine--the other about 15-20% 
blistered or loose.

What should I use for filler?  Epoxy with microballoons or some sort of 
autobody stuff like it has now?

Any suggestions appreciated.

Mark

Liberty.