General

Get A Head Torch

Head torches are invaluable for preserving your night vision and keeps your hands free. The LED ones are excellent and the batteries seem to last forever. Chris Headlamps For Sale

Re-hydrate

In the summer, I've been guilty of not drinking enough fluids when it's hot. It can impair your concentration, so take plenty of (non-alcoholic - SORRY!) drink and, like ground baiting, drink little and often. Chris

Lure Movement

A snap with a round end allows the lure to move freely and will often greatly increase catches. Steve Burke  

Use Your Head!

A lot of heat escapes from your head. A hat helps keeps this heat in. Steve Burke  

Layers Of Warmth

Several layers of thin clothing keep you warmer than one thick one. They're more flexible, too, if it warms up as you can always take one off. Steve Burke