A check back is the way to go against most players. If you bet a paired board, what are you repping? If you actually flopped trips or an overpair you would check back, so if you bet, what are you repping. A small bet will get raised alot, if not floated to bluff at you on another street. A 1/3 pot bet on turn should win, or if he bets into you on turn a pot sized raise should work everytime. Unless he flopped trips, than ur unluckly.
Binkage

Lol.

Fish? Troll? Both?

I'm not sure what the other two who quoted this meant. I actually agree pretty firmly with this. I play a lot of heads up games and vs. almost anyone it is better to check back and then play turn as above. If your opponent is a good LAG you can actually check the flop back then flat the turn and bet/raise the river..the story tells better and you get an extra bet in. Down side is that you give him a chance to pick up something he can call with but then you could also pick up something with showdown value and turn your "would be bluff" into a value call/value bet.

On OP's logic;

There is certainly going to be a connection between the size of your bets and the frequency you're called at all stakes against almost all players. Another thing that is very relevant is the blind level/stack sizes. In the first couple rounds the 1/2 pot bet doesn't perform very well for me but it often does just fine once the blinds are up a bit.

I used to Cbet about 1/2 pot because of the whole "only has to work 1/3 to break even" concept. I still use it as my initial or default Cbet but I find that I usually end up raising my cbet sizing to a little bit over 1/2. Say 60% when I am just cbetting air or cbetting a hit on a wet board. The 1/2 bet is floated so often by so many players these days its almost like a donation unless you intend to go with the hand. I usually find myself betting 1/2 pot on the flop when I actually hit a peice of it and the texture is dry, it gets called alot. Moving the bet size up just a little bit seems to get disproportionate fold equity vs most players. Of course you have to mix things up against decent players and you have to have a reactive style. In general though, I think the size of your Cbets is actually very important and cannot be left out of the equation.

I, myself, will float 1/2 pot often when heads up and in position. Sometimes with AQ/AK high, calling for value against a 80+%Cbetter. Always with any peice including bottom pair no kicker, and often with nothing close to a hand just trying to take it down on fourth street. But I would rarely call a full pot sized bet in with no hand.