"WIFE" said i can get a nother yak.since my boy is doing good

Malibu kayaks aren't that common, but some have what's called a gator seat for taking along a young child. If you are not sure what to buy,  OC's Malibu Two XL can be configured for solo or family  in 1,2 or 3 person configurations. Inexpensive and a great filler boat until you are fully back into the sport

I have a t15 and I just strap a extra seat for my son towards the front facing me. 

Watching your child suffer is the absolute worst thing in the world, I am so happy to hear your boy is doing great!  He will be in my prayers for continued health.