Yes, I have done a track day at Jurby.
This was a couple of years ago in my old Type R (XMN555) to be honest i would not do it again as realy Jurby is restricted by it's size.
At that time there was no actual training either, just one follow round lap then do what you like. at present this is all we have here on the rock.
Personally, i think a trip across to Oulton Park or up to Knockhill would be a better proposition.
Ta Ta
Richard