With the COVID 19 situation we've spent much of this summer paddling. I've upgraded all three of our kayaks over the last few months. The Wilderness Systems Sealution XL (plastic) is the boat I picked up for myself second hand.
-Roomy cockpit for a bigger guy (5'8" 220lbs)
-Primary stability is OK, not great.
-Lots of room
-Very durable in it's plastic form
-Fairly fast for such a heavy boat
-Not the easiest to add a rudder
-Poor secondary stability
-Difficult to "edge" due to poor secondary stability
-Tracking is poor without a rudder
-Tends to weathercock in even a slight breeze
-Heavy, takes a lot of effort to turn sharply
I haven't had this kayak long, but for the last several months I've had it out 2-3 times a week or more. Primary stability isn't as good as I'd hoped. Secondary stability is almost non-existent. Maybe it's just my body shape (or the kayaks), but once I'm past a certain point the kayak is tipping over, not edging. Unfortunately this affects how well the kayak handles in general as edging can only be done with a minor bit of roll on the kayak. Consequently maneuvering with this boat requires quite a bit of effort. We ran a narrow creek with a lot of obstacles just a few weeks ago. Not an easy task with a boat this size, but even more difficult to navigate with a boat so slow to respond. Tracking is also poor. Staying in a straight line on open water without a rudder is frustrating. I've tried various different paddling techniques to keep it straight and none had much affect. The bow tends to wander substantially in any sort of wind.
I did choose to add a Smart Trac rudder setup and that has helped immensely with the tracking trouble. It's improved the maneuverability some as well. However mounting the rudder required an additional adapter (Standard mount bent to fit), and the "Tandem" length rudder. I'll do a separate review of the rudder setup.
Now the one thing I do really like about this kayak is the durability. The rivers we run can dole out some punishment and this old boat has handled it well. When I have had to get the boat to move in a in a hurry it does respond well. It's not a speed demon by any stretch but it does move quite well in a straight line (with the rudder down) with a little effort. Overall I'm happy with this kayak for now. Though the experience with this boat has made it clear that I'll need to be upgrading again soon