I guess if your wanting your shadow to on the "whole" ground surface  having a distance light as your shadow caster is good.  If it just your characters then the spotlight is better, at least for me.  Using the light as a camra is an excellent way to postion the light to where you need.  You need to be patcient though as I've found sometime finding just the right spot is not always easy and it takes time. 

Hope you get it, have fun! ;0) Heztia

"KnowThyself And Be Ture, Let Karma Do The Rest"
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