Smartstring alignment tools- used them?

[skl]

Need to align the GT3 and an incoming Spec Miata race car- the Smartstrings setup and camber-caster tools look promising. Hype or the real deal? The cost would be less than one alignment at the dealer and he's not even sure the GT3 will go up the ramp because it's so low... of course on their ads (Smart Racing ProductsJ) they show a 911 race car.

[mee]

I have not used either of these products. To me, they don't seem that accurate/useful. I don't know if the GT3 is adjustable for caster. The 996/986 are not. You can measure camber with any cheap level. We're talking 1/2" typically here. That's easy enough to measure by hand. It's just math anyway. Toe is much more tricky. You're talking a few hundredths of an inch. That's too difficult to measure accurately by hand (ie using some strings), so I use a laser level.

The front is pretty simple/easy to adjust via the strut hats and tie rods. The rear (at least on my Boxster) is really half-assed (uses eccentrics like most cars). I like to run the car around the block a few times and over a few speed bumps to settle the adjustments and remeasure. There is enough play in the adjustments to make a big difference so I wouldn't trust any alignment that had not been "driven on" first.

That's my 2 cents...