I put the enclosure +gasket on the deck. Measured how much of the drill bit is needed to get through it all + almost through the deck. I then used a collar lock on that part of the drill.
As I drilled all the holes, the enclosure was clamped down and I put bolts through the holes as I went in an “X” pattern. I used 4mm bolts so I drilled 4mm holes.
After, I take everything off and use the correct drill bit +collar to make the holes in the deck the right diameter.
Then I inserted the inserts with the socket cap bolt
I’ve been riding this thing in the rain a little bit since it’s basically unavoidable in Portland. I opened her up last night to check for any water ingress, looks like absolutely none of it got in. I had a silicone seal all around the outside of the enclosure. But now I put it on the gasket itself, this thing should be really really water resistant now.