Portable Heater to Dry a Mound?

When the weather has been favorable, we've been building some bullpen mounds on our larger ball diamonds.  Unfortunately the 3rd base bullpen on Field 9 is in a spot where the field drains to an stays pretty wet.  Because of the wet winter weather that we have here in Central Kentucky, it's been extra challenging for us to finish.  The mound clay just soaks up all the ground water and will not harden to be able to build up.  So we were brainstorming one day and came up with the idea of using a portable heater to dry out the clay enough to finish the mound we started.  We used some old pallets and created a box around the mound and used a tarp to create a tent over it.  We then placed a 350,000 BTU heater on one end and let it run for about 5-6 hours.  

We left an opening in the back to vent and let moisture escape the  "tent"

The following day was sunny and warm (55 degrees).  We were able to finish up before we received another winter rainfall.  It was still a bit soft down the landing area but overall it compacted good.