[Amps] tuning a linear for AM operation

[John Keating]

Looking for suggestions as to a quick way to tune a linear for AM operation.

Amp will be undercoupled if tuned using an unmodulated carrier.  I don't have an easy way tune at high modulation percentage so as to simulate full peak power other than yakking into the mic :)

I suppose I could tune using CW from my SSB rig at 4x the AM carrier power. Reactions from the list?

John AI6LY