Skillbooks worth keeping?

For whatever reason, Morgan dropped 1000x more skillbooks than any other island. I'm now sitting on 50 chopper skillbooks, as well as some helmeppo and morgan books. 

I assume I should keep the guard point books to try to SP level smoker (once I finally manage to evolve him). Who would I use the brain point book on? Should I go ahead and eat the books for arm point and horn point?

Ummmm, hate to break it to ya but those books only work on the char pictured (with the exception being evolved forms of char shown in book who share same skill name i.e. mihawk and whitebeard). Just burn the books on whoever you want to give 5000 exp.

Are you sure? I heard that specials leveled any special with the exact same wording. Treasure cruise guide says the same thing

http://op-tc-eng-version.blogspot.com/2015/03/team-building-concept-3-deathblow-or.html

Pretty sure I've seen guimon / chopper level each other's sp