I fly a lot of RC planes and heli's and have had that model for over a year, its good fun, you need it light though, mine, i have 2 one is made out of EPP foam and the other is out of 3 and 6 mm depron,. they fly fine on water, grass air etc, novelty, but i am getting shot of mine in the next week or so and putting the equipment in another plane.
But there are loads of threads on them at rcuniverse / rcgroups
there called miss hanger one, pyranha etc. loads of names, lots of different makers out there etc. I have the plans as well if anyone wants to build one.