Vigilant - correct.
If you fly it down on the PAPIs (assuming they are set for the desired GP) then acquire the touchdown point, maintain a constant sight-line to the 'bit of tarmac' that the jet is now headed for..seems to work....standing by for QFI incoming!!
I guess that 'bit of tarmac' could usefully have some markings that may assist that visual end-game - not necessary though...