Thermal Mapping

Does anyone have any experience or interest in mapping
thermals, finding hotspots etc, via software like Winpilot.
My first attempt, based on 600 igc files (!) has revealed
there are a lot of thermals out there...but I'm struggling
to derive any information from the data. What I'd
like to end up with is a 'probability map' that shows
the areas that have historically generated thermals
on multiple days...as opposed to sources of a single
thermal that have attracted multiple gliders (i.e.
a huge gaggle). I'm sure there must be folks out there
who have done more on this? I can't find a user group
that already focuses on this, so I've just started
one:



But if there is already an existing group, please let
me know and I'll join that!

Cheers
Chris