In the spirit of modding and sharing knowledge I will share how to make a floating object..Make a new prefab. Place a letter (or any other shape you want, letters work best) then raise the ground level to the height of the floating thing you want or support you need to add then Copy the object and the vertical space to just below the ground grid. Paste it where you need it and you have an invisible support. You're welcome fellow modders.Share the knowledge!