Crazy, That's really all I can think of when I see this!
I have many boat landings under my belt but i just cant comprehend a scenario where I would be comfortable taking my hands away from the primary controls of the UAV to take hold of an unmanned uav with a boat pitching up to it!
Just saying, accident waiting to happen in my opinion.
Glad you got it down safely but I always use a second pair of hands to launch and recover.