The cheek pads have multiple layers for quick personalization, and various sized liner pieces can further improve the fit
Its personal preference, depending on what you like, but we liked the ability to completely remove the cross-body straps (like the Yetis featured) and even tuck in the longer handles (like the REI Cool Haul flip-top used)

You want a technically advanced sonar reading (83/200 kHz is pretty standard and will give you clear reading) You want a model that comes with a transducer (its much easier to set up a fish finder that already comes with the transducer attached) some kayaks are bow/curved shape, which some fish finders will not fit onto You want a model that fits to your kayak You want a user friendly display (some of these features include: counteracting sun glare, waterproof housing, split screens, different accessories, smartphone integration) You want a model that has additional features (good bottom tracking, water temperature, battery life display) Additionally, most kayaks will not come pre-loaded with a fish finder, in which case, you will want a portable fish finder for your activities
* Improves uniformity and fiber alignment
This is the 1.5lb test curve version (ALVAXBCL)