Flopped nut flush, in position, being bet into... line?

[UATrewqaz]

You post in LP and get A [img]/images/graemlins/club.gif[/img] 3 [img]/images/graemlins/club.gif[/img]

Only the BB and an early limper and you go to the flop.

Flop is

T [img]/images/graemlins/club.gif[/img] 8 [img]/images/graemlins/club.gif[/img] K [img]/images/graemlins/club.gif[/img]

BB bets, limper calls, hero .... ??

The question is between raising and calling obviously.

If you call the BB might bet out again and limper comes along, then you bump it up.

Or you can raise now and probably get 2 more SB into the pot immediately, but alert them to the flush...

thoughts?