WARNING. THIS IS AN EQUIPMENT POST FOR TROMBONISTS, please look at something else if this topic is not one that interests you. Trombones are, in my experience, typically difficult to comfortably hold for long periods of time (in the position required for playing). That difficulty is due to their weight, balance and available hand holds; all three factors vary between models and types of trombone. I have a Bb/F Trombone that is not much used these days. I find myself reaching for a Bb (only) which is slightly lighter (7 oz less), has a better hand hold (the brace is better positioned than on the Bb/F and lack of a trigger lever allows that brace to be used by my thumb), and it feels better balanced as it twists less in my left hand – many of my muscles really appreciate that relative ease of control. At roughly 3lb 13 oz my Bb/F Trombone isn’t that heavy; I’d use it much more if I had some help managing to hold it better and wonder what 'aid' might work. A Rath hand support comes to my mind but what experience do other players have of that device and are there other supports or ‘aids’ that have proved helpful to other trombonists too?