Get all your new skills right away? : Lineage 2 Submissions

Remember the quest explot that worked for quests such as Grim Collector?
I noticed a guy today repeatedly dropping and picking up money on his way to the temple to train, so I was wondering if the same exploit for the quests could be used to trick the trainer into thinking he didn't train you, if you see what I mean.
Need someone to test this as I have all my skills already.