? about rope length and neone that rides behind X1

So I ride behind an X1 (07) and I always hear about people riding at rope lengths up to 80 feet long. I usually ride 65 feet but its not because I'm not comfortable with a longer rope length, I would rather ride farther out because I feel its easier to ride behind a longer rope but...even at 70 feet Im behind the crest of the wake (where the wake begins to curl over). This is with the balasts full and we ride with an additional 500 lbs of fat sacs every now and then (where we're not being lazy and feel like filling em up). So my question to you guys is, can you only ride at 75+ feet behind a bigger boat (like the xstar or X2) or are we doing something wrong??? I usually ride at 22mph, if that helps.

(Message edited by hskrfan2187 on March 09, 2009)