I'm considering putting a Mustang Day Tripper seat on my Road King, since it is basically a short-hop bike. For those that have them or had them, how is the comfort? How does it sit you in relation to the stock seat? I'm 290 pounds and it looks a bit skinny for me.

 

I had one for a short time and really liked it, but it's not for a tall guy. It looks good on the bike and it's Mustang quality, but it didn't sit me far enough back. (Very close to stock seat)
I went with C&C seats and had it made 3" back from stock.

 

I would not recommend the seat for a person of your size.

I am 5'4 about 170s the seat is small.
In fact I have one laying around. I bought it from a member here years ago for $100 + shipping.
I have the passenger pillion also that I don't use I bought it when I bought the Mustang wide Tripper.
seat. My wife prefers the thicker passenger seat that I had from an old Mustang touring seat I used to have.

The Mustang wide solo tripper might have to look up the name on that but I would recommend looking at that seat. If you were to go with the Mustang Tripper type seats.

In fact that's the seat that I use full-time.