[TheWorstPlayer]

[ QUOTE ]
Given that he hasn't seen me make any semibluff checkraises, does that lower the likelihood of him believing a flop checkraise to be one?

[/ QUOTE ]
Not really to me. It would seem to me like you were picking a scary board to make a stand. Obviously the check/raise would not be 'standard'. But when you have been letting him steal pots without a fight and now all of a sudden you are betting into him on a scary board when he raised preflop that HAS to set off warning flags. This guy seems decent. I wouldn't be at all surprised to see him fold to a turn bet after you check/call the flop. Or perhaps a call and then not putting in any more money. But precisely BECAUSE you wouldn't want him to fold if you had a good hand, he would expect you NOT to check/raise a monster. A flop check/raise heads up always looks to me like the guy wants me to fold. Otherwise, why would he make such an aggro move?