This year it seemed like we had rain every weekend plus one or two times during the week.
I had all RJ45 connectors for power and data and then used the 3 core pigtails to the light strands.
After running the show for about two weeks, I had two issues. Some lights were staying on when the show was off and another time I had whole sections not lighting. After some experimentation I found out that the driver chips on the hubs were overloading and would shut down. I first thought it was fuses blown until I figured out what was going on.
So the next day, I went around and one at a time unplugged each SSC and sprayed corrosion X on the RJ45 plug and on the RJ45 socket. Once I had did this on all the SSC's I went back around and started plugging them back together in same order, giving just a little drying time. If they seemed a little wet still I would give them a quick shake to get any excess off. When doing this I noticed several of the connectors the contacts had become black on some of the plugs from moisture. The show had started for that evening and when i was plugging them in each strand would start working. After I sprayed the corrosion X, I did not have any more problems for the remaining 4 weeks even though we had tons more rain. I would say about 80% of my connectors were hand crimped compared to pre-made ones.
So my $.02 worth the corrosion X worked wonders and even corrected some of the connectors that had some black corrosion on the pins. The flexibility of the CAT5 cables and jacks along with their cheap price and quick connections and repairs and local availability makes more sense to me especially if you have to crimp a new cable or something quick like when a squirrel decides to chew through your CAT5 cables.