I still keep thinking about this. I run one crew now and it makes it hard to split them with a few days on wbs and some on ztrs. Maybe if I had two crews I could split them up. I'm about 90% residential with lawns from 5k-40k. Then a few larger commercial/apartments. I run a 60" ztr and a 21" push mower. Have a 48" walker for leaves. From a residential perspective I would want smaller wbs. 48 or 52 maybe. So running all 60" wbs may not look different to the old clients who say... Wish that big mower wasn't on my lawn. Maybe I just turn away large properties where ztrs would be needed and stuck to a premium residential/small commercial market?