When you guys harvest your hops, how much bine do you leave on the plant? I've read that you should leave the bottom 2'-3'. Is there a point at which you cut that back even further before winter (Michigan hop growing season)? Do you let that just fall to the ground to die off? What's the procedure for making sure next years plants are healthy and undamaged? I've got what looks like about a 1/2 lb (dried weight) from 6 1st year rhizomes (2 more did not yield). They're all going fresh into a harvest ale in the next week or so...