Teknow
I regret to say that you are the victim of poor instruction you flight should be arranged to arrive at the threshold at 1.3 Vs if I remember correctly the PA38 has a Vs (full flap) of 48 Kts so that should be 61.1 Kts.
65 Kts would be a reasonable speed to aim for on final with a reduction to 62 Kts ( I can't read the ASI to 0.1 of a KT) as you come over the hedge. If is was very gusty then 70kts is the maximum ( reducing to 64 Kts at the threshold) I would use in normal flying practice any more and you are going to float half way down the runway and risk all sorts of pilot induced oscillation problems near the ground.