Great work Marty, thanks for sharing it with us. 
Sorry if you covered this elsewhere but could you share a bit on what prep work is good to do before clearcoating and what needs to be done between coats and after the final coat.

Hey Pajo,

Sorry I missed your post..A lot of what I do has been covered in some of El_Timbo's threads with his fine work.  Basically if its a playfield which has already been clear coated (ie diamond plate), I use a fine grade pad to key the surface, followed by lots of cleaning with prepsol (wax / grease remover) and finally a wipe down with a new clean rag.  Next comes tack cloth then a light initial coat of clear.  Once the first coat has set, I'll generally wet / dry (block) the playfield, and repeat the process a further 2-4 coats depending on what needs doing.