Flopping a Full House, Slow play or Aggressive???

My friend has told me that if I flop something strong I should continue to bet as I normally do. Which I agree with the principle of not switching things up and giving opponents a read on me. It's just that the low stakes that I'm playing right now, I don't think these players notice.

Everytime I've flopped a full house, I bet half the pot and I get the hand folded down to me. Once with 5 players in the hand preflop. I'm begining to think maybe I should check and let somebody make something, or otherwise I might not be making all I can from my hand. What do you all think I should do?