Trim Tab 140 HP - 4 stroke

[Joe58C]

I have a 2004 140hp 4 stroke and noticed the trim tab above the propellor is missing. It may have been missing since i bought the boat last year. I really havent noticed any pull during acceleration. The boat is in fresh water, and was previously in Salt water. Trying to decide if i need to replace it and looking for some advice.

Thanks
Joe