<font color="blue"> I guess you just back into the snow? </font>
Yup. And you don't even need to shift out of HIGH range either, the blower can throw it out about as fast as you can drive backwards! And because you are driving on cleared ground, traction is not even much of an issue. When blowing on asphalt you can adjust it to virtually scrape the driveway clean.
According to the talking heads on the TV, we got 12" of snow Saturday night. I have my discharge chute set so it doesn't throw the snow very far, I get a maximum distance of about 20'. I do that because my neighbor has a rock driveway and when it gets bad I go over and do theirs too, but don't want to throw the rocks any farther than necessary. But if I changed the angle on the top of the chute, I'd easly toss a rooster tail of snow 35' into the air. Nice thing about a blower is that you can use a fairly large unit without a lot of HP. I use mine on a TC24D and the blower is 60". The snow has to be really heavy & deep to slow down the progress. I suspect a 21hp tractor could probalby use a blower the same size, but would just go a little bit slower in the heavy stuff.
I think a rear blade is about 3x faster than using the FEL to clear snow, but a blower is 10x faster! Nice thing about a blower is you can blow AFTER the snow stops, even drifts in the 24" to 36" range vanish. Can't really do that with a rear blade, it seems best to get out with one of those when there is 5" to 8" on the ground so under a heavy snow, you have to go out a couple times.
