HU even a straight is going to be worth a showdown. Obviously there will almost always be a straight draw. JT is the only hand if in the SB I would fold. Otherwise call raises and raise yourself pre flop but stay consistent when you have the big hands (deception). So when you hit trips on the flop you can suck as much money out of that "F" head as possible. Even complete your SB sometimes with AA to induce the bluff and slow play to the turn if you hit trips on the flop. Really "F" with his head. The big risk in Royal when you have a boat draw is if you don't hit it by the river your left with pretty much nothing and a straight ends up being a good hand.