If you are not beating them on the 5, you might want to consider hammering from the back.
What I mean is...Rico beats so many people on the five that it makes sense to get it to his five which in turn means getting it to his 3. Which also Rico beats so many people on.
If you are not shooting well from the 3 and even though you are beating them on the 5 you would want to put pressure on their defense and try scorring from in back to loosen up their defense against your 3 and 5.
Myself...I would like to try a 2 to 5 series, however, So many people have pointed out to me that I score quite a few from in back. While I can beat most people on the five and can even score on the 3, I seem to end up scoring more from in back.
I have noticed that people post that PMs like Terry Moore and others seem to win their matches by scoring from the back.
So... in the days of 2 out of 3 matches can you risk losing a few posessions, maybe points, when trying to establish a 2 to 5 series. It just comes down to what is working, if you think you can score from in back then fire away, if you have trouble with a certain zone defense, go to the 2 to 5. If you can pass 90% or so from the 2 to the 5 then that would be a risk I would take and might during the next tourney in the early rounds to see how it works,
Experimenting
The Pinalyzer