Depends on your own definition of success. Seems a bit over simplified to call game in hand success or not.

My most successful day was not taking a single shot given numerous opportunities. I passed on 8 does and a two small bucks on opening day last year. All within the first 2 hours. Hunting on new land for the first time not truly knowing patterns and outlying areas I considered seeing that many deer a success. Only having put my stand out 3 days prior and no time to scout the land. I considered that seeing those animals a huge success.

I came back to the same stand later that week and had an 8 pointer in my truck at the days end. If I hadn' t been so successful in chosing where to put my stand, I wouldn' t have taken the 8 point. The stand placement I considered a success. And seeing the game is only the first half of a successfull hunt.

There are unsuccessful hunts, I have had a neighbors dog follow me into the woods and not be able to find me or his way back out and start running in circles for 2 hours and barking up a storm - not a success.