Closest I came was about 4'.I would guess7k but I usually approach all wires w/ minimum as 15k. So if it was 7 it would be 2'5" but I used 3' for 15k. Most of the time I was at least 10'.only the back leader did I have to move up to 4'.This is all from the side of course I was much higher overhead.
I didnt mention when figureing MID with a crane you need to take into account the distance when loaded. If I started 3' away and load the boom the MID will be violated due to boom deflection.