Is there any way to create some kind of smoke devise to do my own wind or aerodynamic testing on my truck? I just bought a used wind deflector for $100 off of Craigslist that retails for about $400 and want to install it at at the prime location. I know alot of people think these wind deflectors aren't worth it but my 8000# T.T. pulls like a 10000# 5er because of the flat front and the long bed of my truck and for $100 I couldn't resist. Thought about maybe a leaf blower with a reduced nozzle and some kind of smoke but I think I'd need more air flow and have no idea what kind of smoke they use?