Yes, seen Johnny and the Roccos many times.
First saw them during the early 80`s at the Majestic at Onchan! (long gone now).
Bob Fish (lead singer) is a great supporter of the TT & Manx & has been involved in sponsorship in the past. He lives in Hawick and knew Steve Hislop quite well, I believe.
Not sure where they`re playing this year, best ask at Tourist Imformation when you get off the boat.