I think you should vary between 1/2, 3/4 and full pot and depending on the board. Do you really want to put out a 1/2 pot bet with a draw flop and 2+ people left to act after you when you hit trips or two pair or even TPTK? You will be giving odds too often. I'm usually pumping in 3/4 to full pot. I will do less about 20% of the time to mix it up.

I think the 1/2 pot may work better at higher levels, where people understand odds better and know to fold. At 25NL, you have to drastically reduce their odds.

How much are you raising preflop? I'm raising to $1.50 each time. If they put in $1.50 and then I bet the pot, it's costing them alot if they miss and still think I'm buying it to call or bluff-raise. I'm getting 1 or 2 callers so the pot is decent. I see your points about if I miss and bet full pot only to get called. I've had that happen, then bet the turn, then check the river only to have my AK miss every street and lose to A3 that hit a 3 on the river.

I'm always looking for ways to play better and discussions like this can really improve everyone's thought process.