I'm sure you can figure out a way to do it. You might need an arm mount over the side or you can make DIY scupper mount. The problem with the side scan transducer is it must be mounted below the entire hull of the kayak. The transducer is a full 12" (long and skinny) which is another obstacle.
After looking around the web it looks like the FlexPod is good for transducers up to 6" long. The tripleshot transducer will not work with the FlexPod.