Just got my Lone Wolf climber today, got a decent deal on a used one......3rd one I've owned. After 1 1/2 seasons without a climber I sorely missed one. Plus I am ordering that Ol Man type seat made to fit the Lone Wolf, never was a fan of backrests plus the extra bulk while climbing. Anyways, I've never used the LW with the XL belts. My question: are the XL belts worth it, how much of a bigger tree can they be used on than the standard belts?