Mmm.. guys.. gals...
Usually what brings on an RI is improper temps and humidity...
Why would you want to make it even more improper?
95 degrees is enough to keep the snake sick and even make it worse....
It is a BOA, not a PYTHON.
Boas can't handle that high of a temperature.
The high temp can also lead to feed problems as well, especially in BCIs as their husbandry needs to be quite accurate as they aren't quite as forgiving as the BCC, BCO etc.
Now onto baytril.. the evil medicine...
The dosage comes out dead on for 22.7, that is 3 cc per dose.
It can be split up like that or done all at once, or even orally, with the same dose.
BUT, due to a reptiles slower metabolism, it needs at a minimum of 24 hours between treatments, otherwise you will do some damage to the renal system and eventually kill the animal from organ failure. Every day is too often!
Also, any injectible med, needs to be given in the upper 1/3 of the body, otherwise it will collect in the liver and kidneys with little to no effect to the illness.
To help with any soreness or any ulcerated areas from the baytril, it can be cut with .9% sodium chloride.
Many also have been having great success (me included) in treating RIs by administering the first dose of baytril, in its' full amount with all the follow up treatments being dosed at 1/2 the full dose. (the follow ups being much like boosters
As for the vet.. I can only offer this link, which has one listed in north Cali.
Vet listing
For the snake, large boids can and do sometimes breathe heavily and do make whistling noises for reasons other than RIs.
An oncoming shed that has loosened around the nostrils, retained particles of shed in the nostrils openings, (similar to a humans whistling boogers ), the shear force of air being moved can be noisy as well and if there is any substrate lodged in a nostril or two...
Ususally, unless there are other signs, such as sneezing, coughing, excess fluids in the mouth, bubbles from that fluid, holding or propping its head up to ease breathing, gurgling and whistling in conjunction with any of the above AND listening to its' breathing with a stethascopeand actually hearing anything other than a good clear draw and exhale, then chances are, it is something other than a RI.
The red spots weren't described in great detail, but I have had, have now and have seen may boas with red spots naturally in the pigment of the scales on the belly.
Not saying it isn't scalerot, but typically, scale rot will be a dull rust color and with scale damage by the time it is discovered.
If it is fresh blood, it usually leads to looking under the scales, to ensure there is nothing iritating or penetrating the skin under the scale, such as substrate, mites, ticks etc.
Quite often, in actual scale rot, husbandry is to blame, mainly from not getting the expelled feces and urates out of the cage before the snake is allowed to crawl through it repeatedly.
Scale rot, in extreme cases, can become a systematic problem and lead to death if not treated, which leads me to believe that the red spots are something other than scale rot, especially since you are now on your second bottle of baytril.