New Hobie Revolution 13 unstable???

I have the 2014 Revo 13 and feel a bit unstable in waves and when I turn sharply (with the big rudder it really tips), but my 5'4" tubby size gives me a low centre of gravity that helps me cope. Never thought obesity would be an advantage in any way, but hey....

I have had Outbacks for 7 years now. It's an extremely stable boat, even in poor water conditions. Last year I demo'd a Revolution 13 and liked that it was faster and easier to paddle (Outback is a little too wide for serious paddling, and I don't fish). And even if it seemed slightly less stable, the demo I took on lake waters felt comfortable enough as I put it through the paces. I decided to wait for the 2015 upgrades.

Well, I just picked-up my new 2015 Revolution 13 the other day and, due to lingering cold water temps and winds here in Nebraska, decided to test the new boat in a large local indoor pool just for fun.

Before the first float I replaced the standard rudder with a sail rudder. I also set the new seat to its lowest back position and highest front position. I then invited my Hobie owner friend to take the first sail. He gets 5 feet and rolls over. He gets in it again, comments that it seems squirrily, and again rolls over.

I get in it. I agree. I don't go over, but nearly every turn feels tippy. I adjust the seat so that both back and front are in their lowest positions. Yak feels better, but not by much. I notice the rudder turns left much sharper than right, so maybe this is an adjustment problem. I also notice that the boat will sometimes stay flat in a hard turn, and sometimes lean into the turn a bit. That's okay to some degree, but bring the rudder back to straight and this boat suddenly leans opposite the turn — enough to nearly dump a person. The hull looks great visually. No deformations can be seen.

My friend is tall but lean. I'm tall and 270 pounds. We are both experienced Hobie kayakers. It feels as if the center of gravity is way too high, despite the lower seat position. What the heck is going on here?

I'm switching out the sail rudder back to the standard rudder and will do another float this next week. The rudder seemed to lock down in place properly, at least from the cockpit view, but I intend to have another set of eyes on the rudder's lockdown position next time to be sure it's in its proper place.

Unfortunately, as it stands now, I have no confidence in this boat in pool water, let alone in waves and wind.

1. Does anyone else here (perhaps a tall person) think the 2015 Revolution 13 is unstable?

2. Does anyone have a sail rudder on their 2015 Rev 13, and are they happy with it?

I have never kayaked but am considering one for light touring (not fishing). 6'0, 215.

I like the idea and the reviews of the Mirage drive and specifically the Revo 13 for its speed but like the originally poster, I am concerned about stability because of OP's account and a few YouTube videos showing the Revo going over in the blink of an eye.

Based on what I have read, I don't want an Outback....want something faster but not unstable.

I don't want to give up the Mirage drive but if I have to to have a stable, fast kayak, I reluctantly will.

So, assuming that the seat is in the lowest position, how stable is Revo 13/11 vs Pungo 120?

And if the Revo is stable, should I go with 13 or 11? How about for my wife who is 5'6, medium build?