Ok so a friend of mine who just moved to NL$100 tilt from NL$200 cake saw me play this hand and AIMed me "You know he's drawing so you're double barreling air."

No major reads, my guess is he's not very good and probably a marginally losing player, but this could be all means be incorrect.

Full Tilt No-Limit Hold'em, $1 BB (6 handed) Converter Tool from (Format: Bet The Pot)

BB ($163.20)
UTG ($74.05)
Hero ($100)
CO ($128.35)
Button ($102.60)
SB ($76.85)

Preflop: Hero is MP with [Jd]. BB posts a blind of $1.
Hero raises to $3.5, 3 folds, UTG BB calls $2.50.

Flop: ($7.50) , , (3 players)
BB checks, Hero bets $6, BB calls $6.

Turn: ($19.50) (3 players)
BB checks, Hero bets $15, BB calls.

River: ($48.50)
BB checks, Hero bets $39

So I told my friend I think you're not getting folds on the turn very often, and that if I did have air, I would be triple barreling a lot as I feel the third barrel is what gets a lot of 66/77/56/whatever to fold.

To be honest, I don't even see me betting the flop with air a lot. I expect to get folds or CRed almost always, and I like taking a free one with [Qc] or whatever. Is this a leak? Am I leaving a lot of money on the table not double/triple barreling enough?

Anyways I'm rambling, thoughts on the hand? Is the turn barrel profitable if we're capable of firing the 3-barrel as necessary on the river?

*Edit:* Please note I didn't actually have [Jd], but this is how it would look if I did decide to bet both the flop and turn with air like my friend thought I would/should.

I check behind on this flop almost every time and believe that is the best option vs 90% of opponents.

Yeah that's where I am, hence I had KK in this hand.