An advantage of a sit on top kayak is it's roomier. In addition, sit on top kayaks are more comfortable and easier to maneuver than a traditional kayak; making the kayak sit on top variety quite popular these days.
Hobie Kayaks Sun Shade--maybe something like this for the purple sit on top?
YAKATTACK GearTrac SL series (SpectraLite) will solve of your kayak rigging problems. Built off the proven design of the YakAttack this track is manufactured in the USA and produced with the industries toughest plastic.
Greg Kroger and Mark Breezley knock out another Hobie kayak project with Seadek non slip marine products! Greg and Mark demonstrate step by step the process that went into SeaDeking the Hobie Take a look .