i am looking into getting a Scag walk behind mower with the platform to stand on the back. my yard is .75 acres and i maintain 3 other yards about the same size. is a 36" big enough? i was originally planning to get a 48" or 50", but those things are monsters and i am not completely used to them (i only used one a few times when mowing my church lawn, i fell in love with it instantly!). im not in any rush to get the lawns done quickly, but i think i can shave off some time by not having to turn around all the time. the zero-turn feature will help out a lot. right now im using a 17.5hp scotts tractor with a 42" deck. it takes me about 50min to do my entire yard. i think the walk behind would be faster b/c even though it has a small deck, it can mow much faster than my tractor, plus i dont waste time turning around.