I pick one or two project that I like and I join their curation trail. this usually consume 10-12% of my voting mana. Then I will upvote manually on the posts that the authors I like or know, or if the topics are interesting.
recently I rarely give full power 100% upvote. Usually I set the % based on how much it will be valued, based on the remaining voting mana too.
I also like to split my upvotes so that I can give more of them every day :-)
3 credits added for the liotes ranking