A feature kinda like the one used in Pokemon Dash, when you get the stylus and go up and down with it on the Touch Screen as fast as you can to move and run could work for the slope thing I was talking about.
And for the freezing the geyser thing, Ice Moves that can freeze could be incorporated into it somehow, like the more powerful your Pokemon, or the higher it's Special Attack is, the more chance you get of freezing the geyser, maybe something like that.
Winner of Member Brawl 2011 <3