As QA77 say, you got someone to call it off with a gutshot to the dummys end of a 1-liner straight. Its kind of difficult to argue against that and say, your line was not good. But against better players, a check-raise would generally be the best way to get the chips in on the flop.
If it was on the bubble in a big tournament, you could also take a lower variance route and just check-call the flop, or maybe it gets checked through. While you had a good hand on the flop, it was not exactly the nuts. And on a dripping wet board like this, it can sometimes be an advantage to see a safe turn card, before you start piling chips in.
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