Looking into kayaks

So when I get around to buying a SOT, should I get one with the rail system so I can slide my electronics and rod holder crap right up to me when I want it, and up and away when I don't?  ... Or do you guys recommend custom mounting where I want it?

I think the rail setup sounds better, but you guys have practical application experience that I lack, so tell it like it is 

If the yak has provisions for your FF/GPS just use that and practice the "scoot" if needed.   I found that in the salt (where the motion sickness could be most prevalent to me), I really don't ever need to touch the FF other than to pop it up, or close it down for the surf zone.  Saving a waypoint or two is easy enough with just a push of a button.  For lakes and possibly even slow moving river, the "scoot" up to the FF to tinker is really pretty docile on my motion sickness.  It may be hard to fathom at this point performing the "scoot" as you are currently in a SINK, but it's actually really easy. 

Further FF tinkering......
When my first 'ducer crapped out on me, I saved it and hacked off the 'ducer cable and kept the plug so I can hook up a power supply and tinker with the FF/GPS in my living room.  I really spent some quality time browsing the various pages and functions without actually being on the water. 

Lazy Boy friendly FF/GPS thread.
http://www.northwestkayakanglers.com/index.php/topic,3130.0.html

Only way I'd haul around a 160 is if I was going 20 miles a day or more. Other than that, I think the 140 is more than enough boat and easier to haul.

What's your size?

Thanks, Nanook! I am 6' 1/2" and about 170 lbs.  I agree that 16' is a lot of boat. I think that would look downright intimidating on top of my Forester! Which reminds me. I need rackage (Yakima Easy Rider feet and some bars). I am using a canoe trailer now, which works fine, is easy to load, and also avoids wind resistance. There are times and places where I prefer racks, though.

It will be for the ocean, the Strait, the Canal, and the Sound, and any other larger bodies of water where conditions might be gnarly (or morph from smooth to gnarly during the go out).  I'll still be using my Native 12 (purchased at Alder Creek) in the tidal creeks and small lakes, and other protected waters.
Portland isn't that much farther a drive from here than Seattle, and the savings from not paying WA tax would easily offset the gas expense.

Edit: I just found a good deal on racks, and ordered them. ORS Racks Direct is having a sale that ends tomorrow. Snagged 'em at a good price just in the nick of time, with "free" ground shipping to my door. None of the shops I stopped into and checked had what i needed in stock, and the sales people tried to sell me something that they had, but I didn't want, or said they had to order it.
They weren't offering any deals, either. You just can't beat online shopping, if you already know what you want.
Looks like I'll be heading to Portland around the middle of next week, as soon as my racks get here. Don't want to bounce my empty trailer that far down the road.

I'm 5'8" and 205.  (I know that sounds like a fatty, but I'm under 18% body fat) Would a 160 be better for me than a 140?  I also like to load up and go on camping trips in the Sound and some larger lakes with wilderness areas.  I'm thinking the 160 would be better for me.  According to Wilderness Systems' site, the 160 is only 3 pounds heavier than a 140.  Makes sense as they both have the same hardware with the exception of 2 additional feet of hull plastic.

It does look like the rail systems might be overkill, but I have about 6 weeks before I make a purchase, so plenty of time to think (and continue seeking input from you guys!)

Where is HBH?  I believe he paddles a T140 or T160 and could probably weigh in on this one with his personal experiences.

So when I get around to buying a SOT, should I get one with the rail system so I can slide my electronics and rod holder crap right up to me when I want it, and up and away when I don't?  ... Or do you guys recommend custom mounting where I want it?

I think the rail setup sounds better, but you guys have practical application experience that I lack, so tell it like it is 

True, I mostly use a single view, but I also pop views and zoom fairly often.  Use GPS to set waypoints during crab pot drops and bait marking.  And, to get back to my crab pots among all the others, to set up trolling/trooching routes, and to judge the wind/tide drift.  Use dual frequency to discriminate fish and debris.   Some might call me a fiddler.

I finally settled on a RAM ball adapter for my compact Scotty deck mount forward of the Rod Pod.  Then a 9" arm, and a FF mounting plate with its own ball.  Now I know why the RAM gear is so expensive.  It is built like a tank.  With the arm at about a 45 degree angle it is out of the way yet still accessible.  I've started using the live well to work my crab traps.  Taking Zee's advice I'll sit with one leg in the water, pull the line and let fall into the water on the other side of the yak, then it is easy to lift the trap over the side and behind the seat onto the PVC posts.  I can then flip around and straddle the seat.  I've found this easier than having the pot on my lap or Rod Pod.  The trap is secure and out of the way so  I can easily start paddling if I need to correct for drift or safety.