$15,000 if the trailer's included!
But seriously, unless you've got a rear seat sitting around you've got no use for, I suggest selling as is, the future owner can add a rear fishing seat if they want one or you can offer that as an add-on. Someone may be interested in just buying it and ditching the lean bar to run whitewater.
And clean the boat before taking a picture for the ad. The mud on it looks like it could be where the material has failed terribly.
Nothing in the world is more yielding and gentle than water. Yet it has no equal for conquering the resistant and tough. The flexible can overcome the unbending; the soft can overcome the hard. - Lao Tse