[quote=Dogboy]The top skin of the deck is 1/8” thick max. The foam core is roughly 3/8” thick. Then the inner layer is only a few plies of glass, 1/16” thick or less. My recommendation when drilling the deck for injection, put a stop or at the very least, a piece of masking tape on your drill bit to limit the depth to 1/4” so you only go thru the outer glass layer. It is very easy to punch all the way thru the deck with a power drill and then you just gave yourself a big headache since you will have to plug that hole before injecting or all the resin will just drop down into the hull.
After you drill all your initial 1/4” deep holes, remove the stop from the bit and take the bit out of the drill. Then just put the bit into the hole and spin it by hand (with your fingers) so the hole goes down to the inner layer of glass but not thru. Suck all the foam bits out of the holes with a shop vac.
I also recommend masking off the entire are that you are injecting before drilling the holes. This will give you a surface to mark out before you start drilling and it will also prevent epoxy from getting all over the deck and into the nonskid.
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