Prop Shaft

[Propless]

Not even close. The prop is running off/on the whole time.
When the ONE blade is headed down, it is doing the vast majority of the work to the point it passes straight up and down. Then its doing progressively less, while the other is beginning to do progressively more. But when they are dead horiz, neither is doing shit. No prop is loaded and unloaded like a hydro prop, and its only worse the more power you put to it.
With the twin props, they are arranged 90* out of sync, and the forward thrust is relatively even, although still off and on per side during the run. The fact they are counter rotating helps immensely with the stability of the boat, and counters the "side walking"

You can see the on/off in the rooster tails. This is actually a mild case.

Ok but that doesn't make me wrong. The hydro prop is still doing the majority of its work in a bottom forward way, whether its consistent or pulsed. So it should force/flex the shaft in one direction, right ?

And a flatbottom or V hull prop (fully submerged) that had better bite/greater thrust on one blade would be creating a greater force at whatever position the strongest biting blade was positioned. Trying to whip the shaft around like a jump rope.

And you know I only ask because I love to learn. But just because your prop and one blade/ear 1/8" longer, doesn't mean it had an unbalanced amount of thrust from each blade. I would guess that the number of variables that determine the actual thrust from a blade/ear are greater than I could even imagine. So I'm sure that even though yours had one ear longer, it still could have had equal thrust from each ear, right ?