No, you did the right thing. You thought a violation had been committed and you reported it you did your part. The officers did their job and investigated and found no violation. However you said there was no orange around the blind as required and the individual who shot the deer wasn't wearing orange and that the orange was a requirement for the blind, that is curious. If nothing else the hunters now know they will have to tow the line if they are going to hunt there. If you see them again, go talk to them and feel them out, they should be happy that someone is concerned about what is happening on their property.