The military style high key, low key constant aspect technique is the one I chose with the best chance of success.
It worked for me as well the one time I went parachuting. It was the first time I'd jumped, but since I did a short ground course first I jumped solo. The centre of the drop zone was marked by a small gravel patch...and using my knowledge of glide approaches I hit it right in the middle...SLA works everytime.
