I had a 36" single stage on my Simplicity that actually worked pretty well. I used Pam on the chute and didn't have any clogging issues. I ran the machine at max rpm. I found the key not clogging was using the correct ground speed. If I went to slow it would clog, to fast the machine would bog down, then clog. Get the ground speed right and a single stage will throw just about anything. I had no problem moving 12" or more at a time. At least that was my experience.
With the wet snow I get here along the CT shoreline, I had the best luck going as fast as possible without overloading the machine. Keeping the auger fairly full and thereby keeping the snow really flowing out the chute worked best for me.