If you want to tag the bull I think I would wait until the antlers are off to ensure your safety. If they are cut, then you should be safe. I would also recommend that you fully sedate him to install the tags as opposed to just making him "drunk". Animals not fully sedated, will be much more stressed. To sedate a red stag, you can use xylazine alone as opposed to mixing with telazol. That way, you can reverse immediately if you want to.
