Thanks Pandora, I did try! Believe me, if a roll looks allowable, I will. I'll even give you a short one to 14 or 15 if I can.
Max Angle - Regarding the landing clearances.
Obviously, I will only give 'cleared to land' if the one ahead has vacated. When you read it back, you're saying to me "Yes, I think the runway is clear too (if you can see it of course
), so if nothing else happens I'm going to land."
If I give you a 'land after', I'm saying: "Well, apart from the aircraft, which I've made sure you can see, the runway is clear to land at your discretion", and then you read back "I can see the one on the runway, and if he's off in time, or I'm happy he is far enough down the runway, I'll probably land."
You see why I'm more confident you'll land with the first one. Less variables.
Gonzo.