When I bought my new 30 ft express cruiser and after sea trail I had bottom
anti foul paint applied.

It seems that the performance including top end is different. Is it my
imagination or will bottom paint actually make a difference.

I now have a lift and keep my boat out of the water. If I thought there is
a difference is it pratical to remove the bottom coating. Wasn't the bottom
sanded prior to application? so will I have a less than smooth bottom?

Any comments appreciated.