Assuming there is a little bit of gain on a 5/8 wave vertical, one could presumably use two of these to make a slightly better dipole, and going further, how about using it as the driver element for a yagi? Would the best directors and reflector by also roughly of 5/8 wave length or would it be better to have standard length reflector and directors? Apologies if this has been asked before - I couldn't find it on the forum or elsewhere. But of course it has been thought of before... Maybe the answer is "you could do it but it would be dumb" because all that extra metal could be put to better use as additional directors? I wonder if a quad that is 5/8 wave on a side has more gain than a standard quad? Oops, two questions - feel free to ignore the 2nd one!