there is absolutely NOTHING wrong with gutting a deer laying on the ground , any dirt or leaves that get inside the cavity will do NO harm under 99.9% of time and conditions, till deer makes it to a butcher to be washed and skinned and processed!
a drag rose can be of many shapes and sizes
all it is , is a rope tied to the deer and used to DRAG the deer out
Millions of deer hunters have done this (gutted in field on the ground and dragged the deer out with a simple rope) without any issue's and in many states its the most comm on way they get there deer gutted and out of the woods
simply as most hunters DON"T have private lands and game carts or guides to do it for them in other ways!
Main reasons most folks gut a deer on the ground where shot, is the FASTER you get the intestines out of a animal after its dead the better, also, it helps in cooling the meat faster as well
and sine most folks hunt public lands and don't park next to where they hunt
they also gut in the field to make the animal LIGHTER to make dragging out easier!
the amount of weight you loose gutting an animal in the field is worth the hassle to most all hunters that DON"T quarter there game, or where LEGALLY maybe they have to haul out intact!
other wise, Gut them where there shot, and don't worry about it, its normal doings in most places by most deer hunters!
if you DON"T want to use a game cart due to added costs
many folks will also use something else that is slippery to help easy the resistance of dragging the deer alone out of the wood
like a sled, or a piece of plastic that is strong enough!
lay deer on that and then drag all in one!
I have dragged deer as far as 2 miles(young and dumb at that time, HA ha!! )
no harm to the meat!
the hotter/warmer the temps are, the faster you should be removing the guts from a deer as well!
there full of bacteria, more so than leaves and twigs are!