I think something like 50% of the population is estimated to have some sort of partial tear in the cuff and they don't know it.. so right now, many people get by without surgery!
On the other hand, a lot of shoulder experts would say that shoulder hypermobility can cause a lot of damage and often can't be corrected without surgery.
You'll just have to weigh the pros and cons. What do you mean by you competed on it last year? Have you had this tear for a long time? Why do you want surgery in the first place.. is it hurting you?
My advice would be to see a professional, and I don't say that too often. I don't mean your general practitioner, but a really good therapist or similar. If a surgeon tells you that you need surgery.. not a big surprise. If someone who makes a living off of therapy tells you that you need surgery, well then that could mean something.
In the mean time, check out the shoulder savers savers series and just dig into the literature so you can make an informed decision.