You may have to use a boat hook to move them out from under the boat. It would not be unusual for sharks to consistently mouth one of the twin outboards and never mouth the other. This is caused by them sensing the electrical field. Have a safe trip home. Below are links to all the pages on the website.
Scientific names Explains the use of common and scientific names of sharks.
New England Sharks Tells what shark species come into our coastal New England waters. Species by month Relationship of blue, thresher, mako and porbeagle populations during different months. A whole page devoted to the Thresher , Alopias vulpinus. Lamnidae shark family Gives characteristics of this interesting shark family. A whole page devoted to the shortfin Mako , Isurus oxyrinchus.