1. why the hell wouldnt you 3bet all in? if it "isn't worth your time" to put the money in, stop playing poker.
2. Raise that flop, and if you must smooth call (not terrible depending on villain aggression), don't check that turn. Fast play fast play fast play. I'll spam a link to my waste of a post in the BBV forum - they DO pay off.
http://forumserver.twoplustwo.com/showfl...e=0#Post4203964
Hand three - raise flop, but you won't get paid off if he doesn't have anything, tough luck.