one of the most important things about landing is knowing how to fly slowly
so, go up to a safe altitude (3000 agl or more) and configure for landing...fly as slowly as possible, note the airspeed.
then
stall the plane, note the speed
recover, get this part right, RECOVER
then take the speed you noted as stalling, multiply it by 1.3 and you now have vref on a nice day with steady wind.
try coming in at that speed on final, slowing down when you ''cross the fence'' to touchdown just above stalling speed...a gentle wheeze fromt he stall warning as the wheels touch is nice, but should be done with caution.
in that way you don't even have to pull out the poh and calculate
and what is over the fence/cross the fence? how about on glideslope at 50's agl or half your wingspan