Go to teh conventions, and not "the Arnold Classic" but the big retailer health food expos, thats where all the shakers and movers of the supp business are, because they want to land big corp accounts. Have a photo and resume, and look your best. Also, have a personality...being able to bench 800 lbs means NOTHING if you cant form a complete sentence. Actually, its THE most important thing. Even more important than having your picture in a magazine. MOST pros have no contract at all as it is.
Hit each booth at the convention, ask for who is in charge, and SELL yourself. Stand in front of the corporate person and tell them what you can do for them!
Most BB's think they are just going to get a check and be paid to work out because they are big. This is delusional. No supplement company will pay you $.01 unless they can make $.02 off of you. If you are a fat slob who cant form a complete sentence....forget it!
Sending in a letter/photo is a waste of time.....EVERYONE does that, itll end up in a pile with the rest......calling in? Too easy to be hung up on.
Be ready to go the extra mile to get that 'contract'....