Re: Should I start trying to lock my wrist before it's too late?
It is all about trying to achieve a straight line path. That is darn near impossible to do with a 'wristy' cast. You usually end up with that windshield wiper action that Jim mentioned where the rod tip sweeps in a huge arc instead of a straight path. That SLP is just more effecient as the energy is not lost in a motion not sending the line directly on the intended path.
Once you learn to lock the wrist and have the rod tip move in a SLP you can add a bit of wrist at the very end of the strokes to help tighten your loop.
Jim, is it the pictures or is your rod arm way out to the side away from you?