VERY minimal. Only one spot to shore fish from. Lake is pretty slow during this time of year, Late spring/early summer is best fishing. Fished here the other day, circled the whole lake with little to no action.
you most likely won't get a lot of information about spots through here b/c people don't want to blow up certain places. your best bet is to check out the state site and look at the maps and access and check on google satellite / earth.
there aren't that many great shore spots in plymouth other than in myles standish.