Help

[Drontier]

I play a 60 buyin .50/1 game twice a week at college. Now I used to do extremely well, destroying lots of loose passive players by isolating and taking pots down on the flop. I am a very TAG player in these games. Unfortunately, the game has been changed recently. Players are calling wtih any two "connecting" cards (T8, 35, 58) not even suited for bets up to about 7-8 bb. Only about 3 of the players do this. The rest of the table has seem to tighten up significantly because of this. Now out of these 3 players, only one will make moves at pots without a hand postflop. He will never reraise, but he will keep caling with any draw(to any size bet), and call with any pair as long as an A or K does not hit the board. This is very annoying because I raise with obviously high cards like AK AQ AJ, etc. And this player unfortunately always sits behind me. Usually I bet out the flop against him if I missed the flop and if he calls, I give it up. However, he would bet draws that he hasen't hit yet on the turn, and that gives me big trouble cuz i have to laydown the best hand (AK). I used to just raise 3x bb or 4x bb with hands, but after noticing that they will still call, I bumped my raises to 7x bb so I can get more money in the pot when I have the best hand. When I am getting called by 3 fishes, I feel like I'm getting schooled. And unfortunately, I miss too often. How should I play preflop and postflop in these types of games?