Bone
How low do those boards sit in the water? Just a thought ,I would use those boards just reconfigure them. typically the outside board is forward, if you relocated the folding hardware to change the stagger, and relocated the towing eye like the plans they might pull harder and still fold and it looks like it would only be a matter of drilling a few holes [you might have to play around with the location of the towing eye] JMHO

Don M