How many sets we talking? I remember a guy at my gym back in England who would go for an hour just doing calves because he was a hardcore marathoner. Scrawny, wiriest guy imagineable, but unbelievably strong for his 6' 135 pound self. I've never really trained calves particularly intensely, always with the thought process that as long as they weren't lagging too badly I could fall into that trap of always wearing long pants. Anyways, anecdote aside, recently I've been trying to step it up, so higher reps, but how many sets and exercises would be best?