As far as I know wheeling is very limited in long island. Long island beaches are fun and abundant but they are nothing extreme and you DO need the proper permits which vary among different locales and you need all the required gear (shovel, chains, ropes, etc..)
From what I hear most of the places that were popular years ago have been shut down... I have found a few interesting routes to take but they are really not extreme at all (perfect for a stock jeep), fun... but they are technically closed off which means if you get caught you could face trouble.
If anyone has any other suggestions I would appreciate them.