I like the Corally tweak board better than the MIP. The bubble level is out on the end of the beam where you can see it, instead of in the middle where the car bumper covers it.
But yes, tweak boards are used every time in TC, 1/12th, WGT, before every race.
Serpent SRX8 electric
Serpent Cobra 811TE-E
Serpent S120LTR 17.5 1/12th and S100LTR Pro-10
Serpent S411 Eryx 4.0 USGT
Team Serpent America and Desoto Racing