Megs Ultimate compound and Ultimate polish are derived from M105 and M205 but made a little more user friendly. Probably not as aggressive either which is what makes them more user friendly.
Coincidentally I drive a tow truck for my full time job. If the trucks are light duty as in pick up truck cab and chassis or even the bigger style flat bed style it should be pretty straight forward. Just watch out for grease because the moving parts are lubricated frequently and the grease will...
What about products like Meguiars new Paint Protect 365 that was released at SEMA? I was lucky enough to be able to attend a special open garage at Megs hq after SEMA. We where able to apply the product to a willing participants car. They are not calling it a coating or a sealant or wax just...
I know you are a Megs fan so have you ever considered the Mirror Glaze line Ultimate Wipes? They are also white in color and you could probably test one out at TNOG too.
It looks like that extension you made for the GG3 would make it unstable with that small of a backing plate and pad? Plus that pad looks too small for the backing plate. I get the theory of what you are trying to do but the smaller air tool seems like a safer alternative in a given situation.
D302 is a pure polish the only abrasive action comes from the mf finishing pad so using it with a foam pad probably would not yield any benefits. It was designed to remove da haze and for people who do not want to use D301 as there last step.