Look guys, it would appear you all do not know the definition of a stabilised approach.
I'll post it here for you:
1. The aeroplane is on the correct flight path
2. Only small changes in heading and pitch are required to maintain the correct flight path
3. The aeroplane is not more than Vref +20 and not less than Vref
4. The aeroplane is in the correct landing configuration
5. Sink rate is not greater than 1000 feet
6. Power setting is appropriate for the aeroplane configuration
7. All briefings and checklists have been completed
8. Stabilised by 500ft in VMC or 1000ft in IMC
This is in regards to an above 5700kg aeroplane. Whenever we are talking stabilised approach criteria, this is what is being referred to.
In regards to a light piston single or twin, there is no reason why you can't use this as a reference, however you should fly the aeroplane as is required to do so in the interests of safety.
In regards to the ongoing debate about the 3 degree glideslope, the requirement is to be on the correct flight path for the approach that is being flown. Some require more, others less. A piston single feels mighty awkward when you are trying to fly a PAPI!