You want it trimmed for the right speed - 75KIAS over the fence for a PA28 is crazy, although I dont think that Sunfish means this literally.
ÍIRC the final VRef for a -181 is 63KIAS AT GROSS (this is important) and if you exceed this speed you will floooat.
My landing technique in PA28s is to trim for VRef and then try to keep the aeroplane flying in the flare.
It will land when ready and some will be greasers, some will not. All will be safely within book performance and surely this is the point?
And they are very easy to fly and land :-)