Yes top pair is vulnerable but i still think making big peflop raises and playin HU is the way to go with AK/AQ
But set farming and playing suited connectors in position is also a good option provided there is enough dead money in the pot or opp has a big enough stack.
I dont quite agree on playing AK/AQ for small raises, but i do suggest at lower limits checking flops that miss you. Yeah you might loose a few preflop raises but noone will notice when you actually hit an ace as they did to!