I have owned my 2014 Trident Ultra for close to a year now and love it. I am 6'5" and 285 lbs and am stunned at how well it handles my size. The kayak is very stable. I use it in ocean water and it handles surf and chop very well.
Many other reviewers have mentioned how heavy the kayak is and I will wholeheartedly agree. For me the weight isn't a problem as I roll it to the beach on wheels and never have to lift it on a vehicle. You do feel the weight of the kayak when paddling but I don't consider it unreasonable.
I love the rudder system. It is easy to deploy and retract from the seat and works beautifully to keep the kayak on track. The only thing I might change is to make the seating a little lower in the kayak like my Scupper Pro and thus bring the center or gravity closer to the water. That being said the Ultra 4.7 delivers a much drier ride than my Scupper Pro or any other sit-on that I have tried. I do like the seat and find it supportive and comfortable for my hour or two of paddling.
I can't review the fishing amenities as I don't use them but I love the large open storage deck behind the seat. I carry a sizable crab trap very easily as it is such a large space.
To summarize: I highly recommend this kayak especially for heavier paddlers.