Flash A site

Run forward (hold W), and as you move, throw with left click.

From A main. Stand at the quarter circle on the path and aim at the edge of the column. Run all the way to the site entrance before you throw: it bounces behind the column, so it doesn't flash you.

Practice (with sv_cheats 1): setpos 1550.65 944.97 -145.97;setang -12.17 73.15 0