I'm intimately familiar with the Woodlands, so I know exactly where you are in the area. Without some sort of outdoor antenna, you have basically no chance of hearing Troop F mobiles. Even with an outdoor antenna it would be very difficult to hear all but a couple of transmissions when they are up at the top of 84 where it starts to crest in Greenville.
NJSP is on a trunked system, which is obviously a much different animal. There's a simulcast site for that system on High Point not too far from the monument, so as you can imagine from seeing that thing while driving all over Pike County, it's no surprise that the signal on 860.9625 comes in like gangbusters where you are, even with the rubber ducky on the portable scanner inside the house.
Same goes for the 700 MHz NJICS P25 system, Site 26 is on High Point also. There's not much activity on that site, except for some DOT activity when they're plowing. Also try Site 27 which is in Walpack and also comes in pretty good. Unfortunately you're not going to hear much of anything on either site, as the NJSP is still on 800 MHz and very rarely does a unit affiliate with the 700 MHz system in Sussex County. Sometimes you'll hear the Passaic County Sheriff on Site 26, so if you have a TDMA scanner keep an ear out for them also.
I just thought of something...are you able to receive Port Jervis PD's repeater where you are? If it doesn't come in that well, then that confirms that you really have no chance of hearing any NYSP mobiles, since they'd be in roughly the same area and the mobiles put out less power with mobile antennas, not a fixed base station antenna.