I'm not trying to cause a stir, but I am very confused.
Why would you need 3 fly rods on a float boat or kayak?
I can see carrying one with floating line and one with sinking, but after that...?
I don't kayak, but fishing from a canoe or bass hunter style float boat or conventional boat I have never found the need for more than 2 rods (because of the floating/sinking reason).

Is this intended to allow the kayak fisherman to carry different flies on a separate rod rather than re-rigging? How often do you really need to do that?