I've been part time at this for 2 years but next year I'm going all out and I've been talking LCOs in my area because I know they have been around for awhile and know the business pretty well. So far I'm trying to pick up on the mistakes that they made early on so I don't have to. So far I've learned really expensive ZTRs are a waist of money in my area. This may not be the case where you are but these guys have quite a few Walkers that just sit most of the time because poeple would rather have 21" mowers rolling over their turf. Also when they do need a ZTR they have managed to talk most people into mulching because dealing with the clippings is a hassle. With that being said why pay $13,000 for a Walker when you are not going to need the rear cllection anyway. A $6,000 Hustler would be more than sufficiant and less than half the cost. I see some things I don't understand like how on 1/4 acre lot with a house and garage(not much yard)LCOs will roll over it with a ZTR and then hit the complete yard with a 21" after, why not just leave the ZTR on the trailer and use 21" only.