Hey Occy,
You won't be disappointed by giving it a go. I do a bit of salt and fresh, but I only have 6#, so bigger pelagics aren't really an option. However, flathead, whiting, salmon and bream etc are a blast to catch. I have a floating weight forward 7 weight line I use for salmon and surface fish, and 6 weight sinking line for flathead, whiting and bream.
For the most part I tie my own saltwater flys, and buy my fresh water ones. One great salt pattern that is easy to tie, is the clouser. This will catch you plenty of flatty and pelagics etc and does not need the precision that some other patterns need.
Here is a flatty I caught about 4 weeks ago on a hand tied clouser, in an approximate white bait pattern casting over some broken ground close to where I live. She went 58cm's and gave a very good account of herself. Spent more time chasing her through waist deep water trying to keep her out of the rocks. (Not from kayak).
Yakabe.