In many ways group is easier than individual. Obviously in MD there's no underwriting. What you're looking for is poorly serviced accounts where the owner is unhappy with their current broker. Then you have a deal. My good friend is doing extremely well in the group market.
The problem is you have to service the account. If you don't, then you turn into that "bad" broker and you can lose a huge account. My buddy Bruce tells me stories of group brokers who can lose a a third of their monthy income by either losing a large account or a few small ones.
Interesting to note that the owner of a dealship I worked for blew out from his broker because he didn't send them a Christmas present. I was there. The conversation was the owner asking the ass't "so what did we get from *****?" She said "nothing." He came back with "And how much do we pay on our premiums? Get a new broker."