First as in all motions, tension will hurt you - and more so with float loading. Secondly, I feel it is generally easier to play a fade, to play from mid body hands and certainly to 'swing' if float loading.
If your timing is off, you would tend to block or to 'flip' and/or throw away. If you want to hit a draw with float loading, use 10-2-D - just my opinion, but it is an easier approach.