The thumb worked out great for picking up a large pile of brush and placing it in a trailer. Then used it to take RR ties off of a trailer, then place them for driveway / landscape beds. Unfortunately, I ended up selling the thumb with the tractor last spring.
I did not get one for the new tractor yet, I was waiting for LS to finally get the factory one out to dealers. My dealer now has them in stock and I will probably order one next month. They are a little more than the bolt on type ($330), but there are factory tabs already on the BH for it, and the bottom mounts to the bucket pin. The factory one can also be easily converted to hydraulic powered.