Thanks, Phishahn. I was using 3/8 oz and 5/8 oz keel sinkers (which are awesome btw - thanks Ken for recommending them). I started out back reeling, but then quickly switched to just doing "pulls," which seemed a bit more effective when letting out lots of line. With my slow boat speed last time, it seemed that 3/8 oz were better at getting me to the right depth, since the 5/8 took me close to the bottom.
How much line do you guys like to have out? I guess the more line out, the less likely it is that boat noises will spook the fish, but anything beyond 100 ft seems to be more trouble than it's worth. With all of our bites we were always not quite sure that something was on the other end (and this was probably with 70-100 ft of line out). With the rowing, heavy weights, and long line, it was really hard to know when you had a bite.
Best,
HF