Had the opportunity to right my boat a couple days ago. I figured out what I did wrong trying to right the 4.9 this past winter. When I threw the righting line over the hull, I didn't go behind the sidestay. This gave enough pull forward that I couldn't stand on the board for more than 5 seconds.
I repositioned the righting line and after 7.5 seconds of hiking the Blade came back on her feet.
The sad part is I didn't notice it was also on the trailing edge of the upper board. Need to tune that board now <img src="http://www.catsailor.com/forums/images/graemlins/frown.gif" alt="" />