In tree saddle hunting geometry is actually very important. It is ignored to the exstreem.a low tether Limits your movement and position.you need it in some situations but it is not most desirable for all situations .Im just a jerk on the internet .my opinion means squat.if i can even spell it right.but i use a lower tether when i need to.for some people its what they are comfortable with.and they make it work.just like a ring of steps.if you use a platform it makes sence that you might feel more stable with a low tether since your feet are close together.but put steps on the strap on both sides of the tree and you will notice the difference in positioning around the tree if you move your tether to eye hight.i started with John eberhearts advice tried many othet things and reverted back to his wisdome of trial and error ,thruogh trial and error..i didnt even want to say this because i dont want to discourage you in any way.but i do want you to be comforitable in the saddle ,wich i think is more important than your mobility to make a shot.if you can sleep in it than you are lagit.and all that said,I typically try to setup to shoot in one direction where a low or high tether is only a matter of comfort.plus some Setups are built that way.just food for thought ,try a couple things then go back to what you are comfortable with.and forget what the Dummy on line said.you will harvest when you are comfortable. And i know you will.for some people a low tether could make them feel more secure on a platform so you dont lose your balance as easy moving frome side to side ,more so on a platform compared to a ring of steps, and more so on a leaner,and its worth a try,but what do i know.i just hope you have fun at it dog, you dont give up on it,and you get one down .thats what realy matters.