Ok, this is big... Gym leaders are not supposed to use only one type of pokemon for gym battles... Like i saw in grass gym, he uses all grass team, which can be easily swept by my Jolteon... You need to reconfigure it by adding a rule that AT LEAST 3 pokemon of that type must be used, and other 3 to use for covers.
For example:
Grass gym: 3 Grass types, 1 Water (to cover Fire, Ice and Flying), 1 Psychic (to cover Poison) and 1 Fire (to cover Bugs and Ice)...

Thats how we do on The Emerald Rain...

Ice beam, for example, is a very common move, and a lot of pokemon can learn it, no matter if they are Ice type, or not...
Or perhaps Hidden Power... Get a fast pokemon with high sp. attack stat (like Jolteon) and add it HP Ice... It can 2HKO every single Grass tpe pokemon, as long as it's 2nd typing does not cover it (like Ludicolo)...

You better get this done, or this way will be way to easy to get a badge...

Skochko, this isn't The Emerald Rain. Our Gym Leaders are good enough to counter their weaknesses without any other Pokémon. So actually, Gym Leaders are supposed to have one type, like in-game. Also, you haven't battled her team yet. You don't know if you would sweep her.

Yes, alright... Cant wait ))..

also water isnt super effective on ice and flying

well, i really say i have to agree with this... it seems somewhat unfair to the gym leaders. xD
but i guess like you said we'd have to battle them first and find out.

water: ludicolo

psychic: executor

cradily is a rock grass and rock moves hurt both bug and flying so...i dont see the problem....

in my opinion, any fillers, even one, on a gym team is weak
pokemon designed it so that every type can counter it's weakness
i say keep the gyms how they are, if the gym leaders can pass their test with all 6 of the same type, then it should be a pretty well built team that can counter anything
also it's a pretty dumb thing to say YOU know how gyms should work
you don't work for nintendo and create pokemon, you don't know how "Gym Leaders" should work, if you were a true fan, you'd stick atleast 1/2 way to the game and see that when they had a limited amount of pokemon(Diamond/Pearl) they had 3 fillers between ALL EIGHT GYMS! not each, and they fixed that in Plat. with more pokemon to choose from, we have EVER pokemon to choose from so why should we even need one
also if your rule maker is your site creator, there are sites with the gym idea who had it before you who use no fillers, so no offence to the emerald rain, but you COULD have stolen the entire wifi gym idea from other sites, so who are you to say how it works
that's all i got for now

Monkey

A gym leader should be able to counter its weaknesses. Anyways, 3 counter Pokemon is wayy too much

on that matter, TAG did not necessarily come up with how the gyms should work... it isn't rocket science to assume a gym can have 2-3 a different typing. i've got my own forum, and i sure as hell didn't take the idea from there.

Monkeys right, any good gym leader can counter their weaknesses. For example, I'm the Ground Elite 4 and I have a Torterra to counter my water weakness, Flygon to use sunny day to make water attacks not as effective, and my camerupt to counter my grass and ice weakness. And if the sunny day is up, his fire attacks will do more damage.