Raising the deck

[71kidcasper]

Well I finally have the transom done except for the finish work. My next step will be to raise the deck. I'm looking for some suggestions on how much to raise it and what should I use to raise it with. My stringers are in pretty good shape so I don't really what to make a new grid for the deck to sit on, and I would like to keep the same deck drain configuration just on a higher deck. I plan on putting in new drain tubes and maybe laying them up out of glass so I don't have to worry about having brass ones. I would like to use marine plywood for the deck, just wondering what would be a good way to make the deck higher. Someone had a post on here a while back that showed the stringer being raised with MDF and then glassed over I think that would work well just to fill up the difference. Also I plan on making a removeable fuel tank cover otherwise I would do it like Peter Alarie did his. Any advise or suggestions would be great.