It is possible to use coir for several seasons. It is a precarious journey though. Take in environmental factors. Was it windy? Was it a wet year! Where on the strand is the weave/union? (I'll show pictures of this later, can't right now as my coir is 88 miles away from me currently!) If you can chop your bine down without cutting the coir, whether it is during or after harvest of the cones, you can separate the coir from the bines, with only a little difficulty. Not a super huge deal when you have a "few" plants. Much cheaper and easier on large scale operations to cut both at the same time and do the mechanical type of harvest where all of it (bine and coir) are brought through the machine which strips the cones from the growth and separates it. True coconut husk coir is biodegradable. This occurs with everything that is natural. Take as much chance as you are comfortable with this. It is not if it finally degrades to a level and breaks at a stress point.....It is when! Coir is relatively cheap, and is readily clung to by the bine. Stainless steel cable is not at the same price point, nor does the bine cling to it. Arguably, some will chime in that their hops climb up it. Yes, it will go up it, that is the hop's nature....to climb. Does it readily stay there? Given the right circumstances, it will slump down as it has no grip on what it is climbing. Can the wind unravel your trained bine? Yes, it can. Can a good rain storm? You betcha! If you don't have to contend with any of those conditions, then you have it made. Where I am geographically located, I am subject to all of that. I use 100% coconut husk coir, to give the plants the best possible chance for staying put, and me the best chance of not trying to retrain bines that have come undone. You can use a multitude of string, rope, chain, or wire. You can even use lengths of lumber, or poles, or sapling trees, to full grown trees to let the hops grow up. It then comes down to this....How easily can I harvest these beautiful cones? How am I going to maintain a clear growing area for next season? What is the price that I am willing to accept to pay, to give me the best chance of success, for the least amount of difficulty? These suggestions are based on my findings YMMV! LoL!!!