What would be the best way to wire into the box. Best as in the most secure, and most current flow.

A friend of mine just drilled holes and fed the wire through, then just siliconed around to seal it up. I have also heard of people driving bolts through and wiring to them. If this will work, what type/metal bolt would be best.

My last setup used actual terminals that I got from Sound Advice. I siliconed the back of them in, but not sure if they were secure enough.

All advice is appreciated.

If your going to do bolts ( i am also) i would use copper bolts and washers if you can find them or brass.

I do the wire straight through with caulk method. I don't like those little black plastic round or square terminals very much, they usually use those cheap spade connectors on the inside, and can leak air around/through them.