Hi chrissy 2m,
Thanks for using JustAnswer.com, I'm Dr. Dan and I'll try to help.
Allergies are one of the most frustrating diseases to deal with for vet, owner, and patient. You are correct that it is likely this summer will be no different. An important thing is that you've noticed the seasonal pattern, that can help the diagnosis. There are a couple of options for you:
1. Resign yourself to treat the hot spots every summer
2. Talk to your vet about starting antihistamines (Claritin®, Benedryl®, Tavist® etc.) prior to the hot spot season and see if that prevents the hot spots or decreases the severity. (Doesn't always work)
3. Talk to your vet about topical steroids to try rather than the oral steroids (also may not be enough to work)
4. See a board certified dermatologist and talk to them about allergy testing. Allergy testing can sometimes find the specific allergy. If the test is successful (unfortunately no promises in medicine) and an allergy is pinpointed then proper treatment can be directed at the specific allergy (allergy injections, avoiding the allergen, etc.) If the specific allergy can be controlled then the ideal goal will be achieved and the hot spots will hopefully not return. No test or treatment is perfect but this may give you better results. I hope this helps, best wishes.