years back when we had contract work for wholesale companies. we did bomber 9-a,25-a models,also luhr Jensen hot lips,power dives. the top coat clear was ,clear acrylic sprayed. for custom builds nowadays we use transtar clear..transtar automotive gives the best gloss,durability over clear acrylics....this is on plastic baits. on woods the process changes..we used to do Blakemore trouble shooters by the garbage bag ,grrr,same process.