Bolding that part for emphasis because I felt the same way when I tried sand. Tyranitar is so weak. I mean it has that massive attack stat (I used adamant over jolly) but it is all for nothing when you give it an air balloon (losing a potential attack boost from an item) and you use relatively weak STAB moves. When it sets up sand its job is done as far as I'm concerned because those weaknesses it has combined with its lack of power make it such a burden to play with. I mean, at least Politoed can actually be helpful for a rain team. It rarely does anything essential (depending on your team) but rain-boosted Surfs can actually hurt things in a noticable way.