Flying Spice,
I orginally learnt to fly at Bristol, where the PAPI's are always on, to be honest, you've got to get them switched off, as a GA pilot you need to be able to land at runways that have no visual aids. I'm sure the Tower will oblige if you ask.
The all 'long and thin' too high and 'short 'n fat' too low, works for me!