I had my coach detailed a few years back and they used poly glo. Really looked awesome and got several comments. It took 2 men about 4hrs at a cost of $375. That said not knowing about the product in 2 years it started to wear off in a very uneven way, looked like the cars you see with the clear coat comming off where wind and rain are extreme. i tried just about everything to get this stuff off to reapply with little sucess. IF you chose to go down the poly glo path be prepared to strip some areas and re apply EVERY year.
If I had to do it again I would never have done it!!