Yes Mark that airplane I was setting up permanently on floats and I did not at that time build wheeled gear for it. Since I only can get to the water only four or five times a year it proved handy to test an extended fuel system this way.

Most any senior can be hand launched even with very small engines if the proper techniques are used. Not really an advisable technique if you are learning though. About the only ones that I would not hand launch are my four engine Seniors or my latest a Senior with a .65 AX in front and a Jet turbine on top.

Here is video of my Senior with the smallest engine an OS .35AX being hand launched:

https://www.youtube.com/watch?v=J-ipvqIs8C8

John