Wanted Towable inflatable toy(s)

[Springwick]

Hi Guys,
I'm on the lookout for some sort of inflatable toy for my children aged 10 upwards. If you have anything lurking at the back of your garage and looking to move it on please let me know.
It would be good if its suitable for young adults as well
I'll be towing behind a Mercury 420 with a 40hp unit.
Thanks

[Lee argyle]

Ducks are on amazon for £25, our kids spend many an hour having fun on them, not strong enough to tow ( hence the piggy-back ) but cheap enough if damaged to replace
Towable doughnuts and discs are fun, just be careful with multiple riders and clashing heads