Depending on the size of the hole needed, has anyone tried a Forstner bit?

Lots of excellent replies. Thx guys!

I like the idea of starting out in reverse. Makes good sense.

Is it OK the use the brad point drill bits with a small pilot hole?
If I drill from both sides I'll definitely need a pilot hole.

Not sure yet how good the access will be from the bilge.
I may have to drill from the outside only.

Yes, the small bit allows you to locate the hole from both sides and then use the bigger bit (in reverse for the first 1/16" depth) on both inside and outside and then drill half way on each side!

It's pretty straight forward and you don't need any special bits other than a sharp one!

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I took the advice of running the bit ( or hole saw in my case) backwoods for the first 1/16 to 1/8" depth. I also put blue masking tape to help protect the gel. Came out PERFECT!! I was even surprised.
I relocated my fuel gauge off my dash.

Cutting my new exhaust holes today! 5" hole saw. Biggest risk of doing this job is the potential to break a wrist. Pretty sure I sprained mine when the drill grabbed!

No chips though!

That thing going to Run this summer 502SS ?

Sure is! Drives are out being painted! Engines start coming apart tomorrow. Hope to be in the water mid May!

Love old Scarabs to me the lines are perfect. Nothing I would say I would change.

You rebuild the hull? What speed were you running with what power? What you hope for speed when you get it dialed in?

It's pretty much all been covered but an extra bit I've learned over the years with holesaws is once you've drilled your 1/4" pilot hole use a piece of 1/4" round stock in place of the drill bit on the holesaw arbor. This eliminates the wobbly hole effect because with a drill bit in the arbor it's trying to dig the entire time. With the 1/4" round stock it'll keep the hole a perfect circle.