Beating the Rake

[jkoff]

My local casino has a loose aggressive 5/10 limit game, 5% rake up to $3 max. Someone told me that this is a game to avoid as it's nearly impossible to beat the rake and tokes etc. Same person also told me that a guy needs to play 10/20 to show a profit. Is he right? Is that 5/10 game a waste of time?