You can order trays from Cabela's and prolly BPS, or straight form the manufacturers - Comfortroll, Flat Foot and Pro Tray. My local pro shop carries "FF" & "CT" in stock. If you contact the companies they can send you to a local dealer to put your hands on one before you buy!

Do a search of the forum on "recessed pedal tray install" and you should get several hits. Read them all as you will get good ideas from all of them. It's really not difficult to do it yourself and end up with a professional job. The hardest thing is the first cut - especially in a new boat! Just take your time, know what's under your deck, and measure everything out 3 or more times to avoid mistakes.