In my experience, once they donk bet then call a raise, they have something like a weak top pair and they will very often not be pushed off it. The other option is obviously the FD. This guy's stats are pretty crazy, so I don't mind trying to push him off whatever he has as much as I would against some other players.
Yes if he's on the FD he should fold to your turn raise because he has to worry he could be drawing dead. But your raise doesn't look like a made boat trying to milk a draw. At the same time, if he is on the FD, you're ahead anyway unless he has the
![The Two of Hearts [2h]](https://pofex.com/images/smilies/2h.gif)
in his hand. As weird as it sounds, if you think he's FOS here any decent % of the time, the turn could be a call. You're looking for either a river ace so you can call him down, or for him to give up with his stupid FD on the river. Getting 5:1 on a turn call I think you can do that.