[tommays]

I favor the taping and using studs on a G10 plate version as it is three less holes to leak and killer strong

 

[tommays]

The plate is NOT coming off the hull and the G10 holds a strong thread

 

[tommays]

I don't believe the way to go is mixing epoxy super thick it needs to flow somewhat ?

But a picture of what your trying to change would allow better advise

http://i565.photobucket.com/albums/ss91/tommays/Seafever/2010_0515
_133044.jpg

On plugging just plain holes I have just beveled the carp out of the glass (12:1)and built up back to the surrounding thickness housing with various sized circles

I have also built various dams when i needed to fill and area or hold the stern tube in proper ailment until it could be reinforced with enough cloth for strength