Play on the river.

[Psycho21]

What is your general move on the river if a player in position has called both streets when you have a top pair mediocer kicker. Board is pretty draw heavy and the river is a total brick. Do you throw in a bet, or let the guy bluff at you.
More specifically:
I have a pretty good image in this game. Loose and rather aggressive. Relevant stack is 1k
Two people limp in and I complete w/ QJ, BB checks
Flop (Q 10 7) two hearts.
40 in the pot. I lead for 30. BB calls
Turn is a total brick. Pot 100. I lead for 75, BB calls
River is once again a total brick. Curious what most people do in this kind of spot.
How much are you willing to call on the river if you check?