We also planted 140 potted hop plants that we planted in pots last year as rhizomes and let them grow most of the season. We spread out weed blocker and planted them through it to help us manage them easier. We will be putting drip irrigation overtop once the top lines are in (still waiting on PPL to move some power lines). We've done it to the hops we put in last year. Here is a picture from a few weeks ago. The twine attaches right to the high tensile wire that holds the irrigation tubing.
We actually have 10 of the potted mt hoods in the first two pictures left over if anyone is interested. Send me a PM if you are.
We also planted about 250 rhizomes this year putting us around 550 bines total. I know it's not a lot, but it makes additional issues that were easily solved when we only had 150 hops.