To all you OCS folk,
Don't sweat the swimming as far as endurance goes, as long as you can get from one end to the other without drowning you'll pass the test. If you can pass the test but have difficulty they will work with you. If you're an aviator hopeful you will have more than enough opportunties to swim, I think it's twice a week the majority of the time you're there. For those that don't swim well it's not the actual swimming that gets them rather it's the 5 min tread and 5 min. float. Most people are able to get from one side to the other but when they try to tread water they panic and sink. If you're a weak swimmer with poor form this is where I'd concentrate the most. Try and get to the point where you feel comfortable in the water, panic is the biggest problem!
Concerning gouge, try and memorize as much as you can before you go but fear not you WILL get PLENTY of opportunties once you arrive. In fact the first week will seem like that's all you do. Rarely will you be told to resite the gouge face to face by a screaming drill instructor, they have other plans for you

The time to know the gouge is during the room inspections when the LT or Chief comes in for the first half of the evolution. My best advice is to practice with a friend or family member asking you while standing directly in front or you and picking at your clothes and body to distract you. Don't have them go in any order.
Best way not to roll is be in shape when you arrive and prepare for all the academic tests. About half the people that roll do so because they get sick or injured. The better shape you're in the less chance you have to be effected.
I had 56 people in my class, which is about average. Of those about 30 graduated on time. If for some reason you do roll try not to get depressed and use any time you're given to correct whatever rolled you.
Good luck to all of you, I'm sure I'll be seeing you, or at least hearing you, as the D.I.'s play with you all over the base!!