G'day All, The deck bolt's that i've fixed have been done like Curls said.
BC if you haven't already, add some more glass around the top where the deck bolts are going, i didn't and i think that played a big part in bolts failing, that and more so my heavy hand when doing them up..lol. Since building it i've read a few posts about strengthening certain high stress area's and this 1 of them. I think the splash guard/rim is a great idea. As for the lid, a couple extra layers to reduce the flex can only help also as there will be a more even pressure on the seal. Have fun Cheers

Oh yeah i got a couple of syringes from the local Vet.....he was happy to sell em to me after i explained what i wanted them for
and definately mix the epoxy by hand first