Welcome to the site and good luck with your new business. It's kind of fun...at first! If you've never operated a zer-turn mower before you can expect to do some turf damage while turning. I've been mowing commercially since 2002 and still do from time to time. It's a good idea to carry a small bag of grass seed. Also these mowers get stuck pretty easily. I suggest you have a plan for when it happens. That's my free advice. Anything more gets billed at my consultant rate
I usually only do a 3 point turn on soggy/tender or really thin/weak turf. The key to doing a zero turn is to keep both tires rolling at all times rather than pivoting on the inside tire...as soon as it stalls out you need to reverse it. You need to make sure that you're separating the sticks, in practical terms. It's easier to learn on a hydro walk-behind mower because you can see both wheels and exactly what they're doing. A lot of guys in my area do zero turns in the road, the driveway or other hard surfaces but it leaves grass ground in and I think it's unprofessional, besides being rough on the tires.Thanks for the free advice! I've been practicing 3 pt turns in my backyard.