G'day Tom I removed a painted emblem and name from the side of my 5.7 Taipan which is Gelcoat. In the cool of morning with no direct sunlight I soaked a rag in acetone then laid it on the paint for a while, gently used a scourer to remove a layer then repeated, for the last bit I used cut and polish. Worked perfect with no damage to the gelcoat, if its a warm day or in direct sunlight the acetone evaporates before it works on the paint.
regards