Complex sentence: They are also unofficially used while circuit soldering as a heatsink, by fly fishermen to remove flies from the mouths of trout, and by cannabis smokers as a roach clip.
Split into simpler sentences: They are also unofficially used while circuit soldering as a heatsink, as well as by fly fishermen to remove flies from the mouths of trout. Hemostats are occasionly used by cannabis smokers as a roach clip.