Ok, this is really over the topz but I like it. Wouldn't be too hard, to open the gate when the mower engages.

Clever and nice touch of adding the drain.

I have the Husq 115h, 3rd year starting now. After it "breaks in" and everything is even, you don't see/notice that the pattern is random. You just see cut grass.

I did have to modify the unit though! I contacted vender and Husq but it didn't really go anywhere. Basically I had to cut off 2" of the "chin" in front because it kept hitting chunks of grass and triggering impact. After cutting, it works perfect. Seems like a really odd defect on their end.

Yup! You can (and should*) configure it to do a checkerboard pattern over two runs

*it does work great but sometimes misses just a little bit. Having to do two runs in a pattern makes it pretty much perfect