Next time out find out what rpm the boat will run and still stay up on a plane, just curious. Glad you had fun with the family, that's what it's all about. Careful planning and attention to detail, and the right mindset will help avoid stress that is passed on to the rest of the group and potentially ruin their zest for getting out on the water. Be sure you pay attention to ignition points, wires, caps, etc., as those eventually need some attention, might be good to have spare points, coil, condensor, rotor and cap aboard.
While strut bearing may be an issue, if it was wobbly, I doubt if it was a bent shaft as those are pretty strong and normally retain their integrity. Of course it could have been bent one day in its life but I think it is an alignment issue. Next time under way, lift the hatch and look at the shaft as it touches the motor, and if you see any wobble it may tell you more about the problem. If you can align the shaft to the motor and make the wobble go away, then obviously it's not the prop, bent shaft, or strut bearing.