My point to the OP was that he stated
When you depart on hot days, and when you keep your landing gear down to cool down,
as if it is a generally accepted procedure.
I have operated in some very hot places, and have never heard of this being a common practice. It is included in (as an example) the 777 as a non-normal, but i for one have never actually used it , or know of anyone who has.
So to ask again to Beriuit Pilot, is this idea actually included in your manuals, is performance information available, and what information would trigger you thinking it was necessary on any particular day? People will often end up operating in a particular way because :So-an-so told me too", without it actually being a procedure designed for or approved by the manufacturer.