from what I have read they are 360 feet agl, no a/c ifr or vfr should be that low. if they are vfr then they would break the low flying rule, and ifr would not be descended anywhere near to them. the radar returns would show up the same as the wind farm west of the airfield which poses no threat. i have seen the radar which lba use and there are more threats due to unidentified moving returns both within and outside cas that should be addressed. if there is a static object in place showing a primary return and you know what it is then no problem just avoid. any doubts then really avoid. from what i have read the farms will be built and lba will have wasted money trying to stop them. pity they couldn't have used the money for something else.