What is the best way to seal the plug hole in a new transom? Drill it out and fill it with resin, then use a smaller bit, re-drill it just big enough for a plug to fit in it?
I think most guys on here use an insert that they seal in with the 3m sealant. I haven't gotten that far yet on my restoration, but I think it is explained in the "My Flamingo" thread.
Yep personally I like to drill the hole 1/4" oversized and fill it with Thickened resin. When set up, Redrill to fit the drain tube. I'd recommend using a brass tube. You'll need a flaring tool or you can make your own like this...
