You have AOA on the G3x correct? I find it to be very helpful and the best tool. I am focusing more on the AOA and not the speed. Being nervous at the slow speeds is what you should be.Coming in steep, your speeds can be less because your AOA is less but you will run out of airspeed quicker on the flare. I think this is where most blip the throttle to help you arrest the decent??? I am no means an expert and trying to get the landings short also. Coming in over an obstacle adds significant landing distance. I have a field by my house that is 600' long. (641' according to google) I have a adjacent field to that, that I can use for an approach. There is a 4' fence separating the two. I can consistently land sub 300' but I am nervous about landing in that field. So for safety I am calling my landing distance 300' for no obstacle. Best I have done so far is 200' hard braking. First unknown is its grass so I will have reduced braking. (Don't want to land with it wet or frozen) Second, I have to clear the 4' fence on the one end. I figure I will be 10' agl coming in over the fence for safety. If I do the math on that, 3 degree standard approach and cross the fence at 10' that ups my landing distance 190'. If I cross the fence at 10' and fly a steeper approach at lets say 5 degrees my landing distance goes up 100'. I don't know what factor landing on grass will have compared to the landing distances I am getting on dirt, but I am getting close to 600' now.
So doing the math on yours.......crossing obstacle at 100' and 3degree approach angle you are adding 1908' to your landing distance.(I guess high-school math is useful?) If you go twice as steep and come in at 6 degrees 100' over the trees you landing distance increase is 951'. So even coming in steep crossing a obstacle adds significant distance.
I feel like when I slip I need to double my approach angle to keep the same AOA. (This is power at idle. I like landing with power at idle so anytime if I lose an engine I will make the landing. Maybe this is not the best way to land short though? May need to be under power to get the slower stall speed??) I find if I get setup on the AOA I want, then slip, I must push forward fairly hard about doubling my approach angle, then when coming out of the slip I will have the energy needed to flare.