OK! This has been interesting reading. I am sorry for creating a bit of a heated debate.
I must admit initial intention was not to create a debate about whether we should stay on VASI/PAPI on approach or not. Even with limited experience, it is obvious that there are many runways without them and one can quickly gain the sight picture necessary to make a judgement regarding the reasonableness of approach. And, being a bit above is really not a problem, but probably not necessary. FAA flying handbook for example, would have student pilots stay on VASI/PAPI if there is one. They don't say it is for IFR purposes only. A reputable aviation school also has an instructional video for Cessna 172s where you are advised to stay on VASI/PAPI with power. So, at least in the US it is acceptable to be on them.
Where I fly, we have strong thermals depending on weather, so we could be on glidescope and hit a thermal and quickly be in "white over white" territory even if we did not chose to, so a glide is always an option. But, power in, forward slip would work, too.
We also have regional jets, and bit of traffic, so as long as tower is not asking something I can't do, I have to adjust power to do what they ask to maintain separation. So, I can't say I am too low can't extend downwind now, I'll do whatever is necessary, gain or lose altitude. I can't say I am too high. (Again, I understand that PIC has the duty to make sure what tower asks is doable.)
But here is the dilemma and textbooks don't help and apparently everyone has a different opinion.
Glide=higher speed on final ?
Power in=lower speed on final?
Is this the issue!
Regardless, when I am 20-15 feet above ground, if I level off from glide or power in approach, I can reduce my speed even further and capture the descent rate.
So, in theory I can end up at the same speed regardless of approach 20-15 feet above ground. Then, I can achieve a smooth full stall landing which would not bounce. I think the instructor and I are debating over that part. And he does not like a full stall landing. Is this a debate as well?