No you only need to register if you add a trolling motor. If you go to the dmv website it also talks about boats 16 ft or longer needing to register. My TI is 18.5 ft but I know of nobody that has registered their TI unless they have a motor. To be honest if I bought an evolve I wouldn't bother registering my kayak, I'm sure most don't in Florida anyway ( lots of evolves here)
Hope this helps.
Thank you for the info fusioneng. I already got the sail and was afraid that I would have to take it back....
That is good news. Thank you again.