In reply to mrchewy:
Fingerboard hangs are static strength.
Bouldering. (ie working hard stuff, rest times lots more than climbing time) hits strength and power depending on exactly what sort of problem and how you climb it.
Next along the spectrum is power endurance. P end power endurance you should be falling off because you're powered out, just can't make another move but not because your forearms are solid just because you can't do the move. E end power endurance is forearms like concrete falling off because your fingers uncurl sort of thing. Rest time maybe 2x climbing time at P end and 1x at the other?
Aerobic capacity next - rest times less than climbing time probably. "pumped but in control" is the best description I've heard for it, you can keep on going but a few hard moves and you would be in trouble, flushed, forearms feeling the puml but not solid.
Then the pure aerobic stuff where you can keep going for half hour or more on the rock, building basic aerobic base.
So, you tell me, where were your 4x15s?
For trad I find aerobic capacity and E end pe most relevant. Usually it's about hanging on not doing mega hard moves. And when you're bouldering pick the stuff that's relevant for trad, poor footholds, little holds and stuff.
you wanted basic periodisation, over Winter say, hit bboth ends of the spectrum and then maybe 6 weeks before you want to peak start to move in towards the middle - longer boulder problems with shorter rests at one side and shorter pumpier circuits at the other.