Sorry, just saw this.
The Outback pedals are not head high. The center "scupper" that the mirage drive fits in is recessed. The pedals are right about the height of your hips when sitting in the seat. The Hobie seat in the Outback is significantly different than the Mariner. The Hobie has a removable, lightweight almost standard style high back seat. It does have lumbar adjustments through air chambers. As for wind and waves, it has no issues. The rudder works well to keep you on course. Add an anchor trolley and you're in good shape.
I did a full write up on it last month. Check it out here:
http://www.paynespaddlefish.com/2013/03/final-thoughts-on-2013-hobie-outback.htmlSome questions remain:
How will you be transporting? Truck? Trailer? Car Top?
Will you be camping or doing river trips which require lots of storage?
How is your strength? Look at the weight difference between them.
What rigging would you like to do? the Mariner and Outback are setup differently on the deck.
How is your back? The Mariner seat is a major difference between the two.
Do you fish in shallow water a lot? The Outback will go shallower and do it faster than the Mariner if you need to pull the drive.
Do you want to stand and fish? The Mariner is a more developed standing platform and easier to get up and down.
Sorry for lots of questions but the answers will be your answer. Feel free to ask away. I'll keep up with the thread.
These are both great kayaks and most would be happy with either.