|  | 
			
			
			
					
					
			
				
					
						Dont do feeler bets, they are weak IMO. A Pot sized bet with this flop is what i would do. If turn isnt a diamond, or being a diamond completes your boat, keep betting strong. If its a diamond you can check and call a bet if you have odds to make your boat. I have just played a hand similar to yours in 10NL. Here it is:
 $0.05/$0.1  No Limit Holdem
 9 players
 Converted at  weaktight.com
 
 Stacks:
 UTG Nickelhand ($2.15)
 UTG+1 BASF1 ($4.22)
 MP1 TMTTPT22 ($6.39)
 MP2 lilv1114 ($8.75)
 MP3 Hello Dolly ($9.03)
 CO spudmerola ($2.10)
 BTN njjmd ($2.35)
 SB deb1958 ($9.33)
 BB Hero ($9.90)
 
 Pre-flop: ($0.15, 9 players) Hero is BB
     3 folds, lilv1114 calls $0.10, 3 folds, deb1958 calls $0.05, Hero checks
 
 Flop:
      ($0.30, 3 players) deb1958 checks, Hero bets $0.30, lilv1114 calls $0.30, deb1958 calls $0.30
 
 Turn:
  ($1.20, 3 players) deb1958 checks, Hero checks, lilv1114 bets $1.20, deb1958 calls $1.20, Hero calls $1.20
 
 River:
  ($4.80, 3 players) deb1958 checks, Hero bets $1.30, lilv1114 calls $1.30, deb1958 goes all-in $7.73, Hero goes all-in $7.00, lilv1114 goes all-in $5.85
 
 Final Pot: $27.98
 lilv1114 shows:
     deb1958 shows:
     Hero shows:
     
 Hero wins $26.62 ( won +$16.72 )
 lilv1114 lost -$8.75
 deb1958 lost -$9.33
 |