I have a P13. I do love it. also have a T15 (and started off on a cobra fish n dive) so I got a few things to compare it to.
one thing I noticed about the P13 is that the seat well is low and fairly flat. several hours on the water and what ends up hurting me the most is my tailbone. I have a GTS Expedition seat (
http://www.surftosummit.com/gts-expe...th=299_294_325) and it is very nice. great back support. but I found a cheapo solution for the tailbone. took a piece of cheap foam sleeping bag mat ($5 at walmart) and cut it to the shape of the seat then cut out a small part where my tailbone rests. put it on top of the seat.
the other thing is that with the low and flat seat, your legs stick out pretty much level and they soemtimes get stiff. but that could be me. overall though it's not that bad.
it's a great platform for fishing. lots of space on the deck, in the back, and inside. very configurable, more so than the trident.
the tarpon seats are supposed to be very good. paddle them both and see what you like better.