ObbleeXY
Visionary
Bronze Level
All-Ins should be reserved for a made hand such as QQ-AA after someone else raises. AK is technically a drawing hand in my opinion. Until you hit either one you just have two big cards. When they don't flop a C bet should be considered but it is not necessary. It just depends on what else hits. If you raise 4 BB preflop and the flop is 2,6,7 rainbow by all means C bet. If the contains a Jack or Queen things could get ugly. Obviously position is important to consider here as well. Your C bet could be used to get a free card on the turn if you are in. late position.
NO.
The 2,6,7 raise depends entirely on position and pre-flop action.
If you are on the button raising into the blinds, this can be a dangerous strategy.
2,6,7 is more likely to be in a defender's range than in yours, so betting a 2,6,7 flop narrows your range down to pocket pairs 88 or higher.
If you are up against UTG and the board flops 2,6,7 -- completely different story. You may continue to C-Bet here...but most likely UTG will already be C-Betting into you if you did not raise pre-flop.
Position, stack size, action leading into you and tendencies of those left to act always need to be kept under consideration.
Cheers,
JT