Hi,
thanks for your response.
I understand the principle of crest very well but had assumed that the end of the blue line was giving all possible targets, whatever their height in respect of their position to the crest. I thought that it was the purpose of the blue part.. OK then... Of course you can see a higher point by raising your barrel but then from what you say, the target line doesn't give you any info on a target point in the air, it gives you info on a target point on the ground..
OK... so, this then begs the question: how do I determine that target point in air? because the line will simply continue to go pink up to the end of the map?
do I have to get a horizontal view at ground level, while I play with the target line to do an estimation?? not workable..
thanks anyhow in enlightening me on that point. that may save my butt in future situations.