Just wanted to pass along something I found two days ago . I was in the process of putting my Honda graphics on the Suk and was trying to find some Rapid Tac. I found a blog from a guy who is in the graphics business who uses his own home brew. He had a buddy who was a chemist and together figured out the make up of Rapid Tac. Through trial and error they put together the right proportions. I have used this concoction as a wet application on half of the plane and am extremely pleased with the results. Here is the recipe:

1/2 CUP RUBBING ALCOHOL ($1.68 for 32oz)
3 1/2 CUPS OF WATER (free)
4 DROPS OF PALMOLIVE DISHWASHING DETERGENT ($1.89 small size)(no more, less is better)

From Lowes get a 32oz empty spray bottle ($1.38) and mix the above ingredients. This will work out to approx. 32oz of fluid. Use this to clean the surface then wet surface thoroughly before applying graphics. With this wet technique, you can move your graphics around until you get the right location (especially helpful on the big "Honda" wing graphic. Then use a mini rubber squeegee (obtained in a window film kit at Lowes or Home Depot) to remove water from underneath grahics. Wait 90 seconds to 2 minutes then spray the concoction on the graphics cover sheet. Use your hand and lightly spread water over entire cover. Wait 10 seconds and slooooooowly remove cover sheet. You may have a few little bubbles after pulling cover sheet. Use your soft rubber squeegee remove these bubbles. This will give you professional results in less time without messing up graphics due to bad placement.