Stroke Rate & Stroke Length in OW

After recognizing that my stroke is much longer than most OWS, I decided to poke around and see if stroke was different for OW as opposed to swimming in a pool. I found this (There is a part 2 if you click on the channel and scroll down the right side): YouTube - Swim Smooth: What Is An Efficient Freestyle Stroke? Part 1 I would love to get reactions. I know that when I quicken my stroke rate and shorten my stroke I seem to fatigue much more quickly. However, this could be due to not pursuing this long enough to re-establish breathing patterns. (When I concentrate on my stroke, I tend to hold my breath without realizing it). I do know that while my per 100 pace is slowly improving with more speed work in my work outs, it has dropped now where near what it used to be 20 years ago.