I had used the Water-focused team in an much smaller, informal tournament about 2 months earlier. It was the same team as I used, but with Slowking and Gastrodon instead of Breloom and Jolteon. The team did very well and I easily came first with it; Gastrodon paired with rain support and Surf users is brilliant. However, I found setting up TR after the 1st time harder, and with DW Breloom released, I decided not to risk the weaknesses of 4 Water-types. Generally I don't want a significant risk to certain threats when I spam types. So far, I've had good teams with Fire, Water and Fighting-types spammed. 1st two are based on weather; Fighting was used in the recent online VGC Winter tournament (Hariyama, Breloom and Terrakion). It works as Fighting is a great type offensively and has few weaknesses defensively (and Hariyama's and Breloom's are difficult to expose in a TR team).
Also I hate relying on luck as well. Concerning Protect, I try to avoid risking double Protects, where as triple Protects I will; it's only a 12.5% chance of working.