cool guys...Time to get a waterproof tube I guess... Just a big PVC one should do with a plexiglass window...I am going to go through with the current wind tunnel and use incense then move on to the water system.
For determining lift I was thinking of runing a string front the front bumper foreward, over a teflon pully to a 50gram (or whatever would work 10g to 100g) weight sitting on a digital scale and seeing how much weight is removed from the scale at wind speed.