Charlie, you could do alot with yours since you have an I/O. he can go all the way around the outdrive and actually have a hatch the lifts up or down infront of the outdrive, so you can actually walk all the way around the motor/outdrive. Your price would be cheaper because you would be installing it, but I dont know how much it would cost to ship.
200 bucks per side. Not that bad when you compare the basic one's on E-Bay or West Marine that are starting off at $150.00 plus shipping.
I bought mine off of E-bay less then a year ago and paind 90 bucks I think, plus shipping. Thats for the typical size too. My custom platform is 32x26 and can even go wider if I want to with the starboard.
My basic platform I installed last season is for sale, but I have someone who is interested in it. If he decides not to buy, I'll offer it for sale here before I stick it on E-Bay.
Gotta sell the platform in order to help pay for the other custom platform for the other side. Hoping that having a custom made platform will bring up the value of the boat when the for sale sign goes on her.