At 2 Rivers, I've just hung out at the busy ramp and met up with other boaters going back up top.
Another trick I've done when kayaking was to use your bike to shuttle- the bike path follows the river and it is an easy and scenic ride. You could drop your bike at the take-out, or drop your boat at the put-in out of the way and ride bikes up top, lock them up. That would probably be nicer, as you would be hot and sweaty going into the river, not after, the mistake we made last time. Otherwise, look for my dark blue Tacoma and ghetto red steel and plywood trailer and I'll give you a ride.
It takes a big man to cry...It takes an even bigger man to laugh at that man.