After a weekend that the police chief called one of the busiest in years, with several fights and more than 20 arrests, Oak Bluffs police and town officials said they are looking at better ways to manage the crowds that come to the town for the annual monster shark tournament.

“Our calls for service were way up, our incidents were way up, at times we were pretty much overwhelmed on Saturday night,” Oak Bluffs police chief Erik Blake told the selectmen at their meeting Tuesday.

Former Oak Bluffs police chief Joseph C. Carter has been sworn in as adjutant general of the Massachusetts National Guard by Gov. Deval L. Patrick.

Mr. Carter, who holds the rank of major general, commands the nearly 8,000 members of the Massachusetts Army and Air National Guard. He is the senior military advisor to the governor of Massachusetts.

Mr. Carter became police chief of Oak Bluffs in 1998. He resigned in 2003 to become chief of the Massachusetts Bay Transportation Authority police department.