Maj and Ian, I flew a drifter with a rotax 582 strut braced on Lotus Floats from the Gold Coast, the takeoff run is a bit longer but the ride onto the step is smooth and just takes a stiff pull back ( only small ) to break the surface tension and you are away, the one I flew had stearable rudders on the floats and handled very well at low speed. You loose about 8 or so knots in the cruise and side slipping is diminished a little, more drag more weight and the need to land on hard surfaces softly should all be on mind. I'm sure you will have a blast, the tail does get a little more contact with salt water, but very little, the tail is always kept high except at rotation and the flare, the landing distance is great, comes up short and controllable and will even take the 15 knot cross wind like normal.
If you want to off load the floats, I'll take them from you !