I actually feel a lot better about drops than wheelies...which is probably why I can't wheelie. I really should learn how to wheelie and manual because I know it will help me, but I've just never been comfortable on one wheel.
1 foot leads to 18," 18" to 2 feet, 2 feet to 3 feet. I'm pretty stoked because I did my first 3 footer today, twice. The first time I was way smoother, but I got the 2nd on my digicam, so that's the one that counts. That's probably about as high as I should do on my hardtail, which sounds like a good excuse to me to buy a squishy this summer.