I've been in some pretty heavy rollers before in the mouth of the harbor at Oceanside, somewhere in the area of 5-7ft, still didn't lose my bearing. JoshS, if there are white caps you aren't going anywhere but where the winds want you to if you are on a kayak. The benefit to the two person kayak is it would keep you nose down and the front person can pedal and use kayak paddle, while you steer and pedal in the rear seat.
I'm sure SD bay gets white caps sometimes but not that often and most wouldn't be fishing anyway in that stuff, it's not like we're drifting for walleye. I'd still do the mirage tandem anyday, I'd even one up that and go for the proangler!
I bugged my wife about it one year and she said "you come back from this deployment and you can get one", well I did that deployment and almost didn't make it back from the next so I took her up on it and bought my tandem!
Here are the pluses for a mirage.
1) you can put it on your truck yourself, also fits in the back of a truck.
2) Hobie drives, period!
3) You can only take one person with you, so make sure it's one you like
4) you can dive off of it and spear fish while you leave it nestled in the kelp beds
5) you can take it places you can't take boat.
6) if you got friends with big boats you can haul it to catalina.
7) you have to be in shape, no fat chicks!
8) if you wear Tom's shoes and a nautical themed shirt you can put a sail on it and some outriggers and look like a high roller
9) surf passages are more thrilling
10) if the world goes to hell like in maximum overdrive your boat won't kill you
Stay thirsty gents.