Just to be a little bit clearer about this:
Since Ottoneu is a keeper / dynasty format, making it easier to get players significantly below their ‘market’ value is potentially economy-breaking. If others are consistently outbidding you, the answer isn’t to make the auctions blind or secret, the answer is to evaluate if you are underbidding or if the other owners in your league are overbidding, and then take advantage of your answer from that question.