If you're going to opt for the bleacher seats for a game, section 53 is the best option. It's going to give you the most centrally located view to center field and also won't have any obstructions. I've sat there for many Rangers games since moving to Ft. Worth. It can get pretty snug if the entire row is packed with fans. They don't give you much width in between each seat and most fans out there seem to think they can sit where they want. So you may get to your seats only to find someone already sitting there.

Good spot for a home run ball but it takes some power to reach this part of the field. The right field is where I see the most home runs hit at this ballpark.
Keep in mind, that there are also no cup holders since these are bleacher seats. Be careful with your items, it's kind of a free for all out there.