ORIGINAL: AA5BY
There is a huge temptation to trim a plane for half to full power and in some instances, that doesn't make for an easy plane to land. If the plane is not in trim for low power and a proper glide path, landings are far harder than otherwise. Even a skilled pilot can have problems.
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If low power is trimmed up, the plane will float, get slow and wander off course. If it is trimmed down it will dive for the ground. Either will place unwanted mental demands on the pilot making landings much harder than they need to be.
I would doubt that your instructor would be offended if you asked him to verify that the low power trim is correct and producing a proper glide slope.
tennessee_,
Whatever your problem with learning landings is, this advice will slow things for you enough to feel comfortable doing your control inputs.
Yes, planes can be flown slowly, specially trainers during landings.
Learn to use rudder while flying high, since mastering it makes a big difference for good landings.
I also recommend reading the articles about landing techniques of the links of post #23 above.