And I got the trim tabs installed last night, I used maybe a bit to much 5200, and I ended up using the stainless screws alone.
I drilled the holes a tad smaller than suggested, and oiled a few screws up, then using a screwdriver that was a perfect fit for the head I worked the screws into t he holes, elongating the holes just a tad as I worked them in.
Resulting in what I felt was very solid, then after degreasing and using my aluminum cleaner to ensure the 5200 stuck as solid as possible I coated the tab mounts with lots of 5200 and installed.
My idea that even if the screws are stressed, that 5200 will add bit of adhesion to the mix, once complete I noted the instructions stated to use only a small amount of sealant to the holes. :lol:
Once complete it was pretty much straight to bed, so I'll get some pictures later...
I also noted that the prev owners install of the trim tabs were closer to the middle of the boat, the instructions I had said to keep them more towards the outside edges.
So I ended up just drilling the top off of the two outside rivets I used to seal his holes, noting what I great job I did of sealing those rivets, I just knocked the head off for a flush surface, the rivets were still in place and well sealed, however I doubt very strong.
The new trim tabs covered the holes nicely, and the extra 5200 I used in the installation should prevent any leakage.