Put it on the ground and put in at least 16 - 20 radials (twice that many would be really good). As for retuning? The antenna can be setup to deliver 1.5 - 1 or thereabouts on a portion of any of the bands. HOWEVER...these portions will be fairly narrow--especially on 80. Solution? Use an antenna tuner. Retuning the antenna itself just to move from the CW band to the phone band on 80, for example, is just not practical.