https://youtu.be/HPZoJvAa9dg
I've talked to this kayaker but I haven't tried it yet. He says it's the easiest way in. Put into the musconetcong river at a small pull off just below the i-80 overpass on Waterloo Rd. Then paddle upstream about 10 minutes and you can pull out and drag the boat over a small strip of land and go right into the lake.