I use the Force. It works pretty good. I have 10% the time AAIGUY has but in a similar vein I have good landings and I have crummy ones. I do a lot of glider towing and I get to land a lot. Like BEAgle, I count two perfect landings in my 800 hours, one in a PA12 as a student, and one in a C172 with my then girlfriend, now wife. Those were cool, I wasn't sure I was down until all motion had stopped.
So the question, do I know how high I am? When I am close I do. I strive to get very close and hold it off, but allow a small descent rate until I touch.
-- IFMU