Nuf said about Gliders but some more tips to stay safer
1) Fly at odd numbers, most folk particularly students tend to go for round numbers 1500 ,2000 etc if your at 2700 and meet a student concentrating on staying where he's been told your 200 apart.
2) Avoid the known choke points and honey pots
3) Turn before or at the side of beacons if youve spent hours perfecting crisp beacon breaks its a ****** doing slpooy one deliberately
4) Higher you go less folks will be with you as a rule