Use the texture of the board to aid you in your decision making. Against 3 opponents on a Jack Rag Rag board with no obvious straight draw there is a higher than normal chance that this board missed everyone, so a semibluff bet is more likely than normal to pick up the pot on the flop or a later street. So you should bet the flop. In a small pot on a relatively uncordinated board against just 3 opponents, you should be betting your strong draws(flush draws, OESD) every time, dont mix it up.