Hey
We are currently retubing a woods that was all 3/16” and had zap bac spiles. That farm decided to switch to 5/16” wet dry system with disposable yearly spiles. This decision was made based on a tap to tap production level comparison on their old vs proven numbers on other systems. Not saying they dont work and i dont have much experience with them, but in my opinion nothing beats a new spile. Im sure others with more knowledge will weigh in. Good luck!