It really depends on where he is based. This determines which shelf, bank or target feeding grounds you would go after. If he is based on the outer cape - I'd start with Capt.Bruce Peters. If on the north shore, NH or Maine - I used to work with a group of chunkers at BIW who knew their stuff allright. Down in rhody contact our own Art Burton's son, Art Jr, on the "Mako Bound" who is a sharking pro captain (just ask PeteL!).
Lots of contacts in the New England region, but these depend on the region of origin IMHO.