Squeezer yokes
There is plenty of opportunity to use the squeezer, and usually given the choice I'll squeeze rather than use the gun (more control, less potential for screw-ups, no partner needed, no noise).
When I started the project I bought a hand-squeezer and 3" standard yoke from Avery. I later purchased three other yokes -- a 4" deep throat yoke, a 2.5" no-hole yoke, and a longeron yoke -- as I came across situations where they'd be very very useful. In retrospect, I would have bought the latter three and skipped the 3" standard yoke. There is almost nothing that the 3" standard yoke can do that can't be done with one of the other three.