Am I missing something or is the answer simple (just go higher on trees)?

BACKGROUND: I bought ENO Doublenests for my wife and myself back several years ago. I think I even joined here about that time (2012?) intending to do some overnights instead of just day hikes. I even bought the tree straps and rope that was supposed to be low stretch. I am around 365-375 lbs.

Every time I used my hammock for day hikes or lounging at a park, I get the straps as high as I can get them on trees, to still be able to get in the hammock and I then sag to a few inches of the ground (or no more than a foot on a good day). Of course the sides are taut and then THAT causes problems (I managed to throw myself out HARD once at Roan Mountain, and to this day probably 5 years later my wife will start laughing uncontrollably if one of us brings it up...)

So I know everyone generally says to INCREASE the slack with a ridge line for a better hang... But I can't see how I can increase the slack anymore without being on the ground.

My pastor (pretty hardcore ultra-lighter and Chameleon guy) who is slowly section hiking the AT, told me good naturedly "throw the ENO in the garbage" and look at some of the better cottage makers. I'm okay with that (although the ENO was rated highly at the time I thought) as I'm a huge gear junkie myself, but will a Superior or Chamelion (the two that really speak to me) be better in this aspect, or am I cursed because of the weight. I'm also am open to the possibility that I'm missing a step or basic setup stage(?)

Ideas? Thoughts?