Garry.
Check the location of the step on the full size.
http://www.airliners.net/photo/Seawi...52db59e63f1cbb
The second picture of Russian Seawind is showing modification to the wingtip float. They added flat bottom plate to the back of the float. I thing everyone should do this on their Seawinds. This will help bringing the wingtip floats out of the water faster preventing the water to spill over the leading edge of the wingtip.
http://www.airliners.net/photo/Seawi...52db59e63f1cbb