re: Poker & using maximum time
why would you want to waste time unnecessarily in every other hand. There is no such thing as spending maximum amount of time and going deep either in a tourney or leaderboard. It will just be downright annoying for other player at the table.
If you are talking about not giving away online tells
then let me tell you that you want to be taking a set amount of time - say 5 seconds for making every decision. the reason for doing this is that it will not give away any tells if you do this every time and it won't be annoying either. When a player make a quick decision it can give a tell about the strength of the hand so here is where you can develop a slight edge.