.
Agree, 65 knots may be a tad fast for a C-172.
Depends on model, check the POH, yadda
Yes but the POH for light planes only list approach speeds for max gross.
Sure, approaching a long runway, fly fast and bleed off after crossing the fence.
Also, as mentioned, on long final, carry a little extra in case the motor goes quiet so you
can still make the field, slowly slowing as you get closer. Not quite a stabilized approach as per big airplane requirements, but it will work.
I "learned" flying Cessnas in Alaska operating 100 hrs a month in to dirt strips, beaches and
mountain mining camps. Short strips and low speed was important every time.
Sometimes you "hang it" on the stall warning on short final with lots of power, behind the so-called power curve, then chop power and pull all the way back when crossing the edge of the strip with feet firmly planted on the brakes before touch-down.
(Don't try this at home kids...)
It worked, one could stop a heavily loaded C-207 in 100 meters with gravel and rocks flying into the flaps and tail. Lots of wear and tear but that is what the bosses wanted us to do.
So, long strip, fly fast. Short strip, fly slow.