Richards method, as stated, works well with sharp edges(below) and should work on most of the lower part of your cover. Going by your picture, the letters look to be sunken in on the S&O instructions. Because of that I would approach it differently. First I’d want the part to be cold, to slow the paints drying time. I’d spray one section. Then, using a body filler spreader, I’d make a pass over the paint, wipe the spreader of on a paper towel, and repeat till I got as much paint off the surface around the letters as I could. At this point it should be evident how well this is going to come out, and if it is worth continuing. If it is, let the cover sit overnight. The paint will be dry, but not cured. Ball up a rag, tight, and adding just enough polish so its surface is just slightly damp, gently go over a section. It should be dissolving the remaining paint around the lettering but shouldn’t bother the letters. Then let the polish dry and buff it off. The polish with the paint should come off together. Remember Richards tooth pick trick.
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.