Fishing poles line the shore, flashing in the setting sun. Tattooed dads, some young, some not, with sweating cans of pop at their side, hunker down by sons and daughters, casting and recasting, and patiently, some not, untangling the lines of their newbie offspring. One mom, sporting a turquoise baby sling on her shoulders and a wine red ponytail wields her pole like a pro. But in vain it seems. Fish are jumping beyond their casts, sending rings floating under the breasts of a family of Cana…