Like the others said, it is cycles for me. Sometimes I go to the field and everything just clicks and even as little as a week later I feel like I forgot everything. I have the G2 simulator and use it a lot, especially during the Winter months, just to keep my thumbs in shape. I also try new manuevers on the sim first. It sure is easier than taking the chance of doing something wrong. I have lost 5 planes since last Summer, 2 not my fault, and 3 that were. In each case, I was trying something new when I lost it. My problem is mainly remembering to leave enough space above the ground to recover. I am getting better, but it does come and go if I am not flying on a regular basis.