Surfski for big guys - by: M.v.E.

I am asking for a friend of mine who wants to buy a surfski. He´s a big fella. He tried my Stellar SR 2. Gen. and it was way too small for him. We adjusted the footplate in the max. position but his knees were very high and it was too tight at the hips. Then he tried a V 8 which was better but still a little too short for his long legs. Any ideas  which surfski might fit him
He needs a stable beginners boat like the V8 and I guess he will use it exclusively in flat water.