Just to mention I have a Motor Trike Adventuer kit on my 2010.
My left foots always toasty the right never??
I also did from day 2 take off the foot pegs and use only the floor boards.
I think the heat problems comes from a lack of foot room more then anything else.
With a GW your right on the sides of the engine with your feet for the most part.
If the bike were a few inches longer as in the seat being farther back.
I do believe ones heating issue would be over.
The GW is built for a less then average size guy in my opinion.
Its a squeeze for me to get a good seating position. I have longer legs then average for a guy my height.
If your under 5' 8". This bike should be a good fit is my belief.
I pity guys over 6 ft trying to ride this bike.
Im 5 10 and its the worst part of a GW for me. No leg or foot room.
Cramped feeling riding it.