Decks, Patios, Porches and Docks - Decking questions

I plan to use 5/4 board decking on my deck. It is 24' long and has a section that is 10' deep and a section that is 12' deep with 16" (2x10) OC joists. I was talking to someone about how to lay my deck boards and what size to buy and here is their suggestion.

Just buy 12' decking boards for the whole thing. So you don't have to butt them up against one another and create one continuous seam do the following. Rip one of the boards down to 1 1/2" wide and attach this to the top of the joist that is at the end of each 12' deck board so it runs perpendicular to the house along the joist. Then attach a 2x6 to each side of this joist so you have something to support the ends of the deck boards and run the deck boards from the outside of the deck and butt them up against the piece of 5/4 that I ripped and screwed on top of and along the length of the original joist. So I would have a ripped piece of deck board running perpendicular to the house to use as a parting board and run all of the decking parrallel with the house and butt it up to this parting board.

Questions:

Would this work? Would the 2x6's be ok to hold the ends of the decking boards? Would this look okay?

That's doable and it'll work. The 2X6's will be fine. If you add a little more framing, there is no need to rip the divider board. The key is to support the divider board every 16" or less, and provide support for the ends of the parallel deck boards.

You could also add deck boards perpendicular to the house at the ends of the deck and 'picture frame' the deck. Same thing -- just support the deck boards.

Thanks Lefty. I just wanted to make sure something like that would work and wouldn't look bad. I may do what you said and add a couple on the ends of the deck. It will add a little more character to the deck. THanks.