I used to limp AK 75% of the time. It was a losing hand for me. Now I always raise from all positions and it's a winning hand for me. Alot of it is just C-bets too and showing enough preflop aggression to get other hands more action. If somebody reraises, then call if it's not a large raise. Otherwise if you know they are tight, let it go. The only hands that dominate you are AA/KK. You are even or ahead of other hands.