Things to look at when buying a used yak

[DiabloDan]

So, I've looked here and Craigslist, and seen some pretty decent deals. I'm looking at a Hobie Outback as my very first kayak.

But, when I see one in person, what are things I should look for as to good or bad about that particular kayak?

Also, what specific questions should I ask? And, what responses should be warning signs I am or not, getting a decent used kayak?

I plan to use on lakes and bays, and eventually promote to open ocean. Im doing my homework at this point. I hope to make the purchase in September or October.