[McGillicuddy]

Just an unschooled observation but it looks like a lot of negative trim there. If you are running with the trim down all the way, I believe it may be contributing to the porpoising as it will cause the nose to dive, constantly fighting the bow's desire to rise and plane. I don't know the boat or motor but if there is an angle setting adjustment, hole you may want to set the shaft a little closer to vertical - I think the angle of the cavitation plate is the first thing to straighten out as it is the first "flap" that directs your glide in the water. All the wings, foils, and trim tabs are just inefficient counter measures if the motor trim is off. Experiment with the motor trim more.