The biggest problem for me doing low slow 3D is when I get the airplane close to the ground it's hard to see it past the dollar signs that get in the way. Everyone tells me to get a foamie and practice with that. The problem with that is I tried a Crack Pitts and have flown some others, and I just hate them. I know that is sacrilegious to some, but that's just how I feel about them. I'd really like to have an Extreme Flight 60" Edge to practice with, but by the time you start from scratch to get everything you need plus batteries it costs as much as replacing my Hangar 9 Extra airframe with a AJ Laser airframe, and I'd rater do that.
I look at it this way, as long as flying still gives me a thrill and a short escape from the real world, I'm going to keep doing it as long as I'm able. Making a (low for me) wide open knife edge pass down the runway still gets me excited. Could I do it with the wing tip 2 feet off the ground? Yes, I'm fairly sure I could. Will I? No. not unless I hit the Lottery. Until then that wing tip will have to be a little higher.