Thought I had some defects in gel coat. A local boat builder gave me that opinion, then quotes $1700 to do oxidation removal saying it would help that area but not cure it. By luck another FG owner saw a mobile crew working in a RV dealership and hired him. Had them also do mine and after about 12 man hours(2 guys) going through a regimen based on experience using 3M oxidation remover with other products they fixed a problem I've had for about 2 years. Bottom line: right products & tools combined with experience. They charged me $400 for my Escape
21 and am very happy and relieved to know the first guy was full of it!