I think the curvature would cause problems. Looking at Rayburn Guys baits it would appear they are flat siders like my own jerkbaits, I would be interested in confirmation from him that they are indeed flat sided. Take a look at the roach I did with decal paper, these are flat sided with rounded edges, the thing to do is blend in with paint. The finished product can be very effective if a good match is attained. The decal on the roach only overlapped the curvature of the edges by a few mm, no more. I think on something like a Big S type bait there would be problems.
http://www.tackleund...-deleted-roach/