50-100 - Is having a third nut good?

[Pipedream]

Mediocre 50-100 live, full table. I raise Utg with T [img]/images/graemlins/diamond.gif[/img]T [img]/images/graemlins/heart.gif[/img]. Utg+1, a loose player wearing a cowboy hat and shades thinking he's good, coldcalls. A few rounds earlier he coldcalled one of my EP raises with AA but he's also reraised me with 77 and 43s. His range of hands here is very wide. The blinds call and we see a four-way flop.

Flop-A [img]/images/graemlins/diamond.gif[/img]Q [img]/images/graemlins/diamond.gif[/img]4 [img]/images/graemlins/diamond.gif[/img]

Checked to me and I bet. Cowboy raises, others fold, I call.

Now, in a situation like this, do you find it best to just check and call to the river, folding if you don't hit your diamond? Do you bet if you hit your flush? I personally hate drawing to a hand if I can't feel comfortable raising it.

Sidenote: This player is passive with drawing hands. I've seen him simply check and call with nut flush draws and fold if he doesn't hit. This makes it less likely he's on a pure draw.