Yes...as to the above.

The syringe arrived with a curved and tapered "needle", so spreading the
Thixo around
inside the hull was easy. The original tip was too narrow, so I cut the needle part about in half.
Sometime in its lifetime, this Sunfish's deck received an excellent blue paint job. I don't want to cut an inspection port into it, and hope that the missing wooden backing board won't become a problem.
Using an expired credit card, I've flattened a thin layer of additional
Thixo to the deck. (The yellow color is the original gelcoat). This new layer should bond with the six filled holes—making an invisible bracket. Since the two new screws will be "in-shear",
this repair should last a very long time.
I'd like to know if a factory Styrofoam block was installed below this cleat, as adding a backing block by cutting through the bottom would be a preferable repair. (The repair would benefit the strength of the hull).
The old cleat (pictured) was always in the way, and
some misadventure (with it) may have caused the bend in the boom!
This Sunfish's splashguard is getting its
third re-installation!
