Grid lines at the park

[Rattail-1927]

Ive been at the beach for awhile and Im almost ready to go to the park, gridding at the beach is easy, I just follow the inside of my tracks.... how do you grid your self at the park and especially at night?
thanks in advance !

 

[Smoky bandit]

Ive been at the beach for awhile and Im almost ready to go to the park, gridding at the beach is easy, I just follow the inside of my tracks.... how do you grid your self at the park and especially at night?
thanks in advance !

I use a hand held GPS.. Walk around the outside of the park then color in the blanks .. :Y:

 

[crustydog]

Shadow lines from street lights where possible.