POO from stratics was a discord fanatic. I finally found his old skill gain thread in the stratics archive.
http://boards.stratics.com/php-bin/a...b=5&o=&fpart=1

the handiest bit of infor here. You can gain from anything that's difficulty is within +\- 25 points of your skill. Use jewels and isntrument combinations to get yourself to discording a single low end CU, then swap out equipment. By using different CU's, like tamed / not tamed, you can get to 120 off 1 type of animal.