Is there any chance of producing a smaller, lighter pocket-sized data book? Or has anyone taken the data from your guidebook and condensed it down the just the bare essentials...stuff like "turn right onto dirt road, walk 1/2 mile, turn left onto paved road by tree, walk 2 miles, spring on left by green house ..."  in a line-by-line colume format. The Appalachian Trail has books like that and they're very handy for those who don't need all the extra details, history, etc.  Thanks--binny

One compromise solution would be to have the book have two parts.  Part I - containing just the bare necessities to navigate the trail, find lodging, food, water etc.  And part II containing historical data about sites and all the other bonus  stuff that makes the guide 1.5lbs instead of only 3 oz.  Those who don't really want to read about the stuff don't need to bring it and can rip out of the book the relevent pages and put them in a ziplock.  

Me personally, I am likely to read that type of stuff before going on the trip.  But only carry the very bare information.   

When there are enough English speaking hikers on the INT, we'll definitley publish and ultralight version too.

Until then chopping is the solution to reduce weight, and this is what people do.