Re: helm placement pros and cons
In our little 14 foot Springbok tinny, I found it rides better with one or two people in the middle seats - hence the centre/side console has worked quite well. I haven't verified this with GPS - it just "feels" better. I also like the somewhat improved visibility getting out from in back as well as it drops the bow a touch and she runs flatter.
Many years ago we were T-boned by a kid in a tinny who was too small to see over the two adults sitting in front of him in the middle seats (facing backwards...). I - rather foolishly, I admit - had stopped at the mouth of a busy bay leading into a marina to bring my fenders on board and so was basically adrift. The tinny was approaching in an arc heading into the bay. At first we took no real notice until the line of their tragectory clearly indicated a collision course.
We started waving and shouting, then honking. Nothing. I knew because I couldn't see the kid's face he had no idea what was coming (or he was coming to!), and he obviously couldn't hear us seeing as his ear was a foot from a racous two stroke. The adults...I mentioned they were facing backwards, right? :facepalm:
Because it looked like he was going to hit our starboard quarter I figured a heavy shot of reverse might pull us out of the way. Wrong.
Engine screaming, water boiling, the poor SeaRay tried its best to get underway but the kid still collided with our bow and bounced off. Poor folks - it was a complete and total shock. The adults fell over backwards into the bottom of the boat, the kid fell across the middle seat - and rather interesting, their little outboard stopped (although I saw no lanyard attached).
Because it was more a glancing kind of blow it wasn't as bad as it could have been. The tinny was relatively light and its gunwale and my rubrail made most of the contact. The SeaRay sustained a small gouge under the rail but that was it.
After making sure everyone was ok, and apologies were exchanged (along with my recommendations, to the adults that they either sit facing forward, or far enough apart so the poor kid could at least see), we parted ways none too much the worse for wear.
My lesson in all of this was to be more careful where I choose to drift, not too mention I ditched the feeble OEM electric horn in favour of a nice, fat, LOUD, portable compressed gas horn. It was also probably a mistake to try to avoid the collision by using reverse. We all know it ain't the most effective, thrustwise compared to forward. My split second bet that it would be faster to pull the front five feet of our boat out of harm's way rather than push the rear eleven did not pay off.
Wow - was a windbag I am tonight!

My apologies...
Anyway - my point was there can be cons to having the helmsman in the very back of a loaded boat...