Tarpon 12 Ultra
My 8yr old has the Mini-X. We found his at Mariner Sails in Dallas. Both the
Mini-X & Frenzy are bullet proof yaks for small anglers.
12 ft yaks may be a bit much for an 8 year old. I know that my ride 115 would be really tough for an 8 year old.
Personally, i would look at the tarpon 100. My wife has one and loves it. Ive used it as a buddy kayak for 250 lb guys as well.