[DeeJ]

Raise preflop. Big cards like fewer opponents.
Reraise flop to see if he has at least a Queen. Flush draws will stay in. Though nut flush draws may reraise. What cards are you hoping arrive at the turn? Your 5 (or 3? or 2?) outs?

On the turn you probably scared him by the raise 'cause you are very unlikly to be impressed by the 4[img]/images/graemlins/diamond.gif[/img], you had something worth slowplaying. Apparently. But you don't really have a strong hand, so your isolation raise removes what? A flush draw? nope? There's two flush draws out there. Maybe BB has an 8 or another pair <Q. But they will be folding to 1 bet anyway unless they play -EV which you like, right? I guess Qx may fold to a raise but call a single bet. But you want them in, right?

River you have to bet as he may fold a 2-pair or a flush draw rather than check behind.