I have both the roof crank up and a tripod for the times trees are in the way. Lots easier to just crank it up than put up a tripod in my opinion. And if its in a motorhome with hydraulic levelers even easier.
Installation isn't bad, but the azimuth locking feature on mine didn't work well, because the center shaft had to be so accurately centered in the hole drilled through the roof. I ended up making a plate maybe 10" in diameter of aluminum that over came the problem, by allowing it to be centered correctly then mounted on the inside on the ceiling. Mine is an older Winegard RD4600. I think they have been redesigned some now. Mine is centered on the curve of the roof, but they make an adjustable ring to allow mounting on the sloped portion of the roof.
Winegard's digital elevation gadget is good. But since I put it in, I also made a print out of how many turns of the crank for what elevation. Works just as well with in 1/2 turn for me. If using the digital and running from the RV's 12VDC make sure the voltage is pure DC and not just rectified AC. The latter causes the readout to vary.
Which model is it you are planning to install?