Humpies are easy to catch, just look for rising fish as they'll let you know where they are. Humpies, like most salmon, travel in pods that vary in number. Your best bet is to place your fly in the middle of the group and then use 6 inch strips to retrieve your fly. They seem to be equally aggressive in Salt or in fresh water. In fresh water, I would hit them as low in the system as possible as they will be much brighter.
I've had humpies hit my fly on the surface but have had more hook-ups using flies with dumb-bell eyes. Flies tied with chartreuse and/or cerise are always good.
Pinks are generally aggressive and fight pretty well. Although they can be caught on 5 and 6 weights, I'd suggest using a 7 weight so that you can get them in without wearing them out. It's often possible to have 30 fish days.
In Hood Canal, the Pinks start running in late June, and early July. They then seem to run a little later as you work up the coast. That said, you should have 2-3 months worth of good fishing for them if you're willing to travel some.
Best of luck,
Skinny