While I wouldn't absolutely guarentee problem free performance, I would be willing to bet if you set up a quality drop away, like the NAP, Trophy Taker, Muzzy or Dropzone for example, you would have any problems. Think about this. You are currently using a NAP 3000. There are as many moving parts on it, as there are on most drop aways. And, some of the drop aways have even less moving parts. Also, consider that there is a spring holding your launcher up on the NAP 3000. Drop aways simple reverse the spring.

I was concerned a long time ago myself. But after shooting drop aways exclusively for the last 4 years or so, I can say none have left me down. And, like you, I"ve been in some pretty nasty weather with mine as well. Depending on what bow you're shooting, I would highly recomend the NAP QT4000. IMO, its one of the best out there. Unfortunately for me, it wont fit my Bowtech.