I parked at the recreation complex and took the stonetown circular trail to the summit. I continued following the trail north, which led to several nice viewpoints. However, the trail eventually led back to stonetown road, but far from the parking lot. If I did it again I would retrace my steps on the the trail after hitting the viewpoints.
I parked at the Mountain Lake trailhead on Lakeshore Drive.....followed the yellow-blazed mountain lake trail until you can see the rocky summit. This required a short off-trail excursion to get to the summit, which did not provide any views at this time of year. I backtracked to the trail and followed it further towards #4. Once I descended a decent amount, the trail crossed numerous woods roads and trails which made hiking a little difficult.
I parked at the so called "picnic area" on Rt. 31. (It's a gravel cutout with a picnic table.) I headed into the woods, crossed tunnel hill road, and continued to bushwack all the way to the summit. On the return trip I did find the remnants of a trail that seemed to be heading down towards tunnel hill road, but I lost it before I got to the road. If is wasn't for this club and website, I wouldn't see any reason to do this hike. No views this time of year, and nothing but bushwacking, thorn bushes, and bugs.
I parked in the picnic area across from the Jenny Jump State Park Office. The Jenny Jump Trail (blue blazes) leads out of the parking lot and quickly merges with a white blaze trail, which I took to an overlook with views of the Delaware Water Gap. When the trail reaches the overlook, a sharp left turn (southwest??) through dense briars leads to the summit several hundred feet from the trail. This seemed to be a fairly easy way to the summit. I was able to find the cairn marking the summit without any GPS navigation.