Take road to Bathgate from motorway roundabout. Just as you cross canal, car park on left. Friday & Saturday nights, seen some action there during day on Sunday too.
Dollar park Saturday night after 10pm
Falkirk dollar park after 10 pm
Take the wee road down past the scrapyard and before the canal - 2 nice big lay-bys round the corner from each other
At the back of the cemetery/playing fields just off the main road between Denny and Falkirk(NOT the old road, the cops always check there now) - on a wee track going to the farm there's a little bridge and some gates with spaces for parking
Take your pick - either the Wheelhouse side with the huge cap parks or the ones at the top of the hill Visitor Centre side. Usually some action happening most weekends
Just up on your left at the Carron Dam end of the road where the windmills are, or a wee bit further up at the gate/track into the ruined castle - loads of action in the summer
old Denny High grounds - A sneaky one this, nice secluded carpark deserted apart from the odd dogwalker
Follow the Bonnyside road to Rough Castle past Bonnyside House, 2 nice car parks
Dark car park behind the Social Club
Pretty good in the summer months, loads of quiet wee clearings and benches about 2 minutes walk from the car park mentioned on here - 2 lassies with a strap-on put on one hell of a show a few months back. Avoid Friday or Saturday nights though unless you want underage drinkers pestering you
Two decent sites - On your left about a quarter of the way on the single track road up to Torwood Castle there's a clearing with a Portakabin, or go all the way up to the clearing next to the Castle/woods entrance
At Head of Muir find the single track road into Chacefield Woods (it says 'No Vehicles' but ignore it) and there's a car park/clearing about 300 yards along on your right...be discreet though as there's a cottage just over the back from it
There is a car park secluded by trees and single track road