Im not sure what PL Premium is, but Gorilla works well. I use it on paddles, coaming laminations, whatever. It likes higher clamping pressures, so might not be the best choice for a scarf joint though. For sheer clamps it would be fine.

: Newbie S&G question;
: Has anyone had luck with Gorilla Glue or PL Premium for gluing up scarfs or
: for gluing sheer clamps to to sheer panels?