We used WD40 when pulling N0RIV's 160 meter wire antenna through tree limbs at the knot (where the fishing line meets the wire) to help it slide and prevent snagging. Worked like a charm!
I brought the radio along fir Christmas vacation (you never know, Santa might send out a distress call and if I wasn't on the radio it could ruin Christmas).
Went to a park and put a 20 meter wire dipole in the tree. Made several contacts on Christmas day.