The problem is that time on a summit is usually quite limited for one reason or another. When activating in GM/SS I often experience enhanced signals between the Midlands and Scotland when planes fly the Birmingham - Glasgow / Edinburgh routes. However, I would not have time to check out possibilities using prediction software. For me it is what it is, an added bonus which may or may not produce results. I class it in the same category as ducting - great if you get it, but do not expect it to happen.
Memories of working Don G0RQL in Devon from GM/SI-110 Knap of Trowieglen on the island of Hoy at a distance of 887km (551 miles) still ranks as one of my favourite moments in SOTA. GM7UAU, G4UXH, G1ZJQ, M0JDK and G0TRB were worked in sequence as the duct lengthened.
73, Gerald G4OIG