Cilan Bros. - 1/5 if you use your monkey. 3/5 if you don't.
Lenora - 1/5 if you have fighting pokemon/moves. 4.5/5 if you don't.
Burgh - 1/5 - you should/most likely have a fire, rock, or flying type in your party.
Elesa - 4/5 - her pokemon are fast & hit hard. a Dwebble with SR wil make this battle easier.
Clay - 2/5 - grass & water types make this a joke. don't let Excadrill use hone claws or the battle will go from easy to hard in seconds.
Skyla - .001/5 - this battle is down right painfully easy. Scraggy can pwn this gym. dammit Skyla, why can't your skills be a great as your beauty?! T_T
haven't gotten to the 7th & 8th gyms yet, but from what I've read, they're both jokes. Also, GF, I'm glad you stopped using rock gyms as the first gyms, now stop making the 7th & 8th gyms ice & dragon respectively.