This is an excellent discussion, and a lot of useful information for people who wish to register OHV vehicles... however, excuse me while I step around the HUGE elephant in the room - both metaphorically and literally!
The OP has just bought a Triumph Tiger 800XC - that is barely an 'off-road' motorcycle at all, never mind one you'd use regularly in an OHV park?
Surely you'd save a lot of grief by just registering it in the usual way? - you can't be that short of cash if you've just bought a 2013 model!
Just my 2c to go towards your regular motorcycle fee ;o)