Tom,
Try full flaps on final. Go ahead and get full flaps on early so the apparent rate of closure doesn't speed up on you on short final. You will have to carry more power, which is good (prop air over wing) to stay on glide angle.
I made a technical error on my last post, but it has no factor when looking outside, as we should. I said we use elevator to maintain rate of closure. I should have said, we use elevator to maintain the apparent brisk walk rate of closure with the numbers. The great thing about keeping our head completely out of the cockpit is that we don't have to think about slowing up, which is actually happening. We have a great visual clue, the apparent brisk walk rate of closure. We have great aural clues, relative wind and engine noise. We have good kinetic clues, relative buoyancy and g loading and slick pressure. The brain connection with our senses is more powerful than any computer.
I haven't used a VASI in many years. Army VASI put the helicopter on the pad. I think the airport VASI puts the airplane beyond the numbers. Some of the other instructors here can answer that. The VASI has no factor on the apparent brisk walk rate of closure approach. Use power to stay on VASI or just visually maintain a decent angle just over any obstacles. I would rather you just miss the obstacles rather than maintain the VASI. But I am teaching contact rather than instrument flying and I no longer fly at night. Had too many engine failures. Night would scare the pee out of me. And I have had to miss too many wires, irregular tree lines and tree height, farmers trucks, tractors, implements, and combines.
Later,
Jim
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