I had the same problem I my 2000. I just drilled all the way in to the interior, and made a block of alder and finished it with varnish. I installed stainless bolts long enough to go all the way through, and used stainless flat washers and acorn nuts.
Looked fine and was very secure.
I had a leak where the front cap met the body, and the original screws had rusted almost completely away, and the luan mahogany was pretty bad in that area as well. Wish I had some pics, but that Moho is in someone else's hands now.
2005 Georgetown 342DS XL, Full Banks Package
2005 Liberty Renegade 4X Toad
1989 Wrangler Sahara Toad
1984 19.5' Beachcraft i/o 5.o liter, 4-bbl (and you thought your Moho sucked gas!)
D/W Carole and Maggie the Teacup Lab (Black Chihuahua)