Fastrax review and alignment questions for the pros.
I have the Fastrax setup and also found it would fall off the wheel real easy. After that happening 4 or 5 times I found a light weight bungee cord that was long enough to wrap completely around the tire and Fastrax setup to hold it in place. You don't want the bungee so tight it distorts the gauge. Just enough to hold it in place.
Since I could only afford 1 Fastrax I use the toe measurement method that Del said Crackedback uses except I used equal height 6x6's to support a piece of square aluminum tubing on each side resting against the tires to measure off of