[student_of_game]

Any card from an Ace through six could potentially hit villains (not all likely to do so, of course). I don't agree with your reasoning about wanting someone to catch a piece of this board. What second best hand would they make that would pay you off?

I would raise this flop and be content with winning the pot now (since top pairish hands don't fare well in large multi way pots...). Maybe this line won't make you the most money this time, but I prefer to keep decisions simple until I develop better reads.

In the absence of reads, turn is a fold (as from villain's perspective, this isn't a great spot to be bluffing into an UTG raiser and a hero who is showing strength on the turn...).