Twenty five years ago, I bought an Anderson tree sling, and used it a bunch for many years. Not so much now, as I enjoy more comfortable perches...but I will still dig it out for "aggressive" hunting at times. I think many of the newer sling style products are somewhat of an improvement in comfort. Still, I could spend 4 hours easily with one. Some keys to success using them are having good footsteps, footholds to afford you some movement around the tree. You will not have problems shooting with them, and really, you will feel "safer" at times contorting your body for shots. They work well for those who learn to use them properly. I still use mine a lot as a safety harness, too, and it works great as a deer drag. I consider it one of the best purchases I ever made in hunting gear.