I have yet to put together a schlongboard, but it is on my to-do list! The concept is simple. Drill new truck holes in the kicks of a regular popsicle style deck, and throw on some trucks with some wedged risers. You get a longer wheelbase but still short board for $45US or so. You are still stuck with a 7-ply deck which may be a bit too flexy.
This video although in spanish is a great example. The graphics and style are nice, and he also shows it mounted with Gullwing Sidewinders which are a neat truck (but admittedly opinions vary).