Here's what Mr. Homer Kelley wrote about Float Loading
10-19-B DOWNSTROKE (OR FLOAT) LOADING This procedure delays the Wristcock until the Start Down and completes it as specified by the Stroke Pattern Assembly Point Component.
It means that the golfer pretty much does not cock the wrists in the backswing and the wrists eventually cock on the downstroke.
Here's some more:
'Float Loading' also describes this procedure - especially the sensation, because the Cocking motion should not be at all sharp , but gentle, or even lazy. With a 'Frozen Wrist' procedure (10-3-K), the Downstroke Cocking Action is limited to increasing the Right Elbow Bend only.
Assembly, Loading and Release are usually accomplished simultaneously, then with a Flicking action - automatic or non-automatic - continues as either Drive or Drag Loading, designating it as either 19-B/A or 19-B/C. And use corresponding Short Shot recommendations.
Then the rest is stuff in 'The Golfing Machine' I really wouldn't worry about for now.
So who are prime examples of 'float loading?' I would say JB Holmes for one:
And of course, Sergio Garcia
So, did Hogan 'float load?'
And here's a sample of Hogan's swing in slow motion over at SwingAcademy.com (http://www.swingacademy.com/swinganalysistool.aspx?id=372)
I lean towards Hogan NOT being a float loader of the golf club. Or if he is a float loader, then it's very little float loading going on. His wrists are clearly cocked in the swing, clearly in the 3rd and 4th frames (or P4 and P5 in MORAD terms). There's more wrist cock going on in the downswing, but I would lean towards that just being drag loading (something I can post about later down the road.)
I think the keys to becoming a float loader are a few things, which Manzella goes over in his video:
1. Keeping the clubhead 'under the hands' on the backswing.
2. Getting a wide arc on the backswing.
3. Getting the butt of the clubhead pointing at the belt buckle at address.