FFF,
Good question. I've operated on some fairly entertaining strips in my time. Consistancy and practice are the key.
As you know, a good landing follows from a good approach.
So, a nice stabilised approach is the key. Get the numbers right will help the landing enormously.
Go to the aircraft manual and see what they say for the approach speed. For fun, calculate out the 1.3Vs speed too. This will hopefully convince you that you don't need to add extra speed for your approach. (ie you are well above the stall already). As you've found out, the extra speed becomes a liability when landing. ie the float etc.
I rarely add anything more to the Vref speed other than what our ops manual says we can. Reason? No performance data on "extra" additives.
So, we've hopefully got the mechanics of flying the approach sorted. Now, what about the strange and sometimes confusing visual cues? (The beauty of PAPI and VASI). It does come easier with practice but pick a point on the runway and fly to it. Shift the eyes away from the point when you can't see it. Try not to be rough or jerky at this point. The aeroplane will do what you ask.
The objective is to land where you want it to. Not where it thinks it should.
Nailing a good landing (and approach) into a tricky aerodrome feels great.
Don't fall into the trap of being "spooked" by the conditions. Stay on top of the aeroplane and use the published speeds and techniques.