You know about the shop vac method? There's an article in SA about this already - mid 1980's, I think (maybe 1986 or so). They were using it on the Monnett Moni design. This was rediscovered by Sonex builders maybe 5-6-7 years ago, and has caused mass abandonment of house-buckling presses ever since. Seriously, somewhere there's a photo of a Sonex wing leading edge press in someone's garage, where they used house jacks to the ceiling joists to - well, what did you think would happen - the ceiling cracked and the house lifted up... The shop vac method is casual and non-threatening by comparison. One builder already documented this on video - he distributed it via cd for a while, but it might be on a video website by now. If it isn't, it should be...