It took about 4 cranks per side to get it up and clear. That got me up about 4 inches (perfect clearance) to drive out. It sits about 16" from my ceiling. If I needed to go up higher, it wouldn't be a problem at all but the kids and I can def walk under it and have no problems.
As far as lowering it, I did it yesterday with no problem at all. Just released tr handle first, then the crank goes down an inch. The hardest part is backing it in perfect. Once you get that down you are set.
Again, because the extra strap works as a "sling" you have the freedom to lower the top and push it around with your hands to line up perfect.
I'm pretty darn happy wIth the results. And the price.