Hi Zman39
I have the ultra stick 60 with a two stroke OS61FX. I use a 11/6 APC propeller. This airplane is my favorite!!
With this combination the airplane has very good vertical and can be hovered. I had to add 3oz of lead to the tail for it to balance at the recommanded location. My radio it not capable of using the crow mode but I do have the wing flaps. You can land very slow and the airplane in my opinion is easier to land using the wing flaps.