Dw fields parks Lower porter pond is the best. Its across from oak street..Especially a hole that is small next to it and water no longer goes there is the best!! Caught 8 huge bass there last summer... Good luck !!
I live in Abington near the Brockton line and i find that good fishing in that area is limited. In Whitman theres Hobarts which i find to be the best but it is very pressured. Island Grove in Abington has tons of shore fishing but is pretty poor quality fishing.
I havent spent too much time at DW but i think i may have to check it out now!
Do you have a kayak or anything? If you do and your willing to try a few towns over your options get a lot better.