I always hunted them in the afternoons between 12 and 4 because everyone else was either burned out from hurrying out early or bored. The antelope get a chance to rest and usually bedded on a slope at that, Mirage can be an issue but it is not like the goats are gonna go hide anywhere , No matter the conditions, I Gut, wash ,then skin and rewash as soon as feasible. If you are in a very limited area and there are not too many other hunters , They may bed on a hill with a breeze fairly early , but will be able to see for a long way around them. Where are you hunting them at????