It takes my Guy about 2-3hrs depending on how much of a ball ache the back window is. He does it in One piece.He had a little set back when he did mine, he removed some trims for better access, once he'd done it, he was putting the last trim back on and his Lad came running through his garage making him jump.....and caught the tint with the trim and ripped it...ooopps so had to do it all again!!!
He's spot on though and always busy - I get him plenty of work too so he gives all my customers a discount!