Well myself and a mate both have the Playtime 500 Ribeye with 80HP Yam 4-strokes. Tubes ARE HYPALON (I have the specification invoices to prove it)
We both have kids, and dogs and regularly go cruising / sking / wakeboarding with our craft laiden to the gunwales!
Apart from a good wash at the end of the day no other maintainence required.
Mine is 1 year newer but neither boats show any sign of wear & tear....tough as old boots mate.
As far as rough-sea-handling goes...Recently got caught in 8-10ft standing waves crossing the River Orwell entrance..No drama
I accept that Ribeyes arn't designed to the industrial spec of Humbers etc btu I'll take the Pepsi challenge against other 5m Ribs any day of the week.