A bluff attempt, the imbelice called

[Tharpab]

SNG at wpoker 5 seats top 2 paid(70-30)I had about T600 and was BB, SB had me covered and about T2000, 4 left.
I had K10s and knew I had to make a move quick because the blinds were at 30-60 and I was the shortest stack.
He minraises preflop which be have been doing 70% of the time, he is very lag loose, flop is Q 8 3, he minbets I raise him all in, the son of a * calls with K3 and no help came, I think this been my 4 or 5th dutch boyd bluff attempt and yet I'm called again and bust out, which way is better to bluff?Is this alright?