Guys just a warning abut hanging the gear too low, I managed to break both an antenna possibly (i threw it away after it stopped working and had some physical damage) and also just noticed I damaged my vtx. What happened is that I must have had it hanging a bit below the landing gear and during a small crash clipping the ground the vtx antenna got badly kinked on the white cable section. I did do some flights with horrible range and figured that I got the same range with antenna connected and no antenna which is what led me to believe it was just the antenna broken.
I did get some IBcrazy bluebeam antennas as it was hard to get replacement DJI ones, I have ordered these but they are a few weeks away. I tried the new antennas but had the same crappy signal, I also noticed the sma socket had some slop in it so opened up the tx and noticed all the solder joints have been broken. So technically I had no antenna connection at all, it doesn't look like anything has burnt out in the tx but I am going to resolder it and try again maybe needing to buy a new tx if re-soldering doesnt fix this.
At least it will give me a chance to compare range between the DJI cloverleaf antennas and IBcrazy Bluebeam ultras that are regarded as some of the best antennas by many RC guys.
So positioning of the antenna is a bit tricky as you want it to be down low and prefereably forward to avoid being behind the camera or body at high forward pitch angles. Its pretty rare to fly high speed in reverse using FPV so not a big issue trying to avoid this attitude position. If flying high speed in reverse there is also little point in getting a good FPV signal as your not looking where you are going anyway. Just make sure the antenna is just above the landing gear to avoid damaging it or the TX on a hard landing or a ground scrape as I did.