I'm doing watering on 10s pretty consistently, although I rarely get the chance to actually try it at 14s/15s. The usual route is chopping at 0, then either stones or fighting at 5 (in case it's 7, watering most likely), then watering at 10 and hoeing at 14/15, then I stop because, like you said, i'm too lazy to run another full circle for a not-so-great chance of completing hoeing at 20s. I've heard a couple of people claim watering at 14/15 is doable and I find it plausible because I do manage 10s watering with a miss or two, less so lately since I got a new mech kb and I'm still getting used to it and missing everything like crazy for the past week

. But in case I happen to go for it, I'll definitely try to make a video.