Welcome to HF Rod!
When I discovered that my HH tree huggers were too small, I ordered the next biggest size from Hennessy. Now I can mix and match according to the conditions. Around here, some folks have gone to the Ring/Cinch buckle suspension system. If you do a tag search on Rings or buckles or suspension, there's lots of different threads about that.
The Tri-glides are useful for 1" wide straps. How were you planning to use those? It's a little confusing unless you were planning to replace the Hennessy suspension line with straps.
"Civilization is the limitless multiplication of unnecessary necessities." - Mark Twain
“I go to nature to be soothed and healed, and to have my senses put in order.” - John Burroughs