Focus on what you currently do when you fill out the application. If you only do a few things but they really take up your free time then that's understandable. If you have a job to support yourself or family then that's a perk.
Start coming up with things that you've held leadership positions in and they will be especially interested in that. If you have any certifications - CPR/First Aid, Microsoft Office User Specialist, HAM radio operation - pretty much anything, put them in there too. On that note, just go and get CPR/First Aid training - it looks good and you can save a life with it
If it helps, I didn't have any sports down on my form, had a couple of clubs, and focused heavily on my involvement with Civil Air Patrol - specifically the search and rescue and leadership aspects of it. My academics were good but not outstanding; certainly not math. I received an AFROTC scholarship last year.
What's going to be really important is how you present your information - your resume will be important, and you should talk with your teachers about helping you make it look better. The interview will also be a crucial part, and I'm convinced that the recommendation from that is what got me through the areas I lacked in like sports and academics. Show up knowledgeable, looking professional, and eager to ask questions.
Right now scholarships are even more difficult to get with the RIF, so I probably wouldn't have even gotten through if I applied now. By the time it's your turn however the situation may be better, so don't give up. Remember, you definitely won't get a scholarship if you don't try.
By the way, one final thing - don't major in something you don't want to do. It sucks to get a scholarship on a tech major and then hit four years of heavy math and calc based physics when you're not good at math...trust me.
Good luck and let me know if you need any more help
