Played a bit of this recently.
Only up to level 18.
Living in a coastal town, we seem to get everything. So seems easy to pick up Magikarp etc. Especially on piers. ( We have two).
Bournemouth gardens is better than the grinding spot Octo posted but obvs not in the Central Park league.
I shalt grind away over the next few weeks and see if I can post a Gyro for Pam that is good.