Fishing in Mexico does not afford us the luxury of picking up "whats catching" fish during a weeks stay. Inevitably, I run short on what is working. So, as a group we scramble to share and that often works great, but sometimes you run short. It is usually the head of a particular lizard or fluke color that I need. So, when you need to mend the top portion of the plastic which is the best option? Mend it. Sonic welder or Soldering Iron?