Used the good old aldis lamp yesterday. All ended well, although, as the acft was squawking radio fail on 5nm final, I was pretty sure he'd be looking for a light
The hardest bit was holding the green button in, light steady on the acft with one hand, whilst making calls to other acft (TWR/APP combined) and writing on strips with the other (dinosaurs, I know).
To the original OP, I concur with the suggestion to look for a green light. If TWR want to clear you, but due to frequency congestion and leaving the landing clearance a bit late etc can't, chances are they'll use the lamp (if they have one .... and are over 30!). Otherwise, you can check the "go round" box for that month
