You definately don't want to jump your deer right after shooting it ,if you do ,you have a greater chance of not ever finding it,or making the job of getting it out alot tougher on yourself when you do find it.These animal's can really travel if it's jumped and wounded,I've seen it happen too often.
A buddy of mine made this same mistake 3 year's ago on a bull moose,it would of dropped close to the road if he hadn't started yelling ,when he yelled about his hit the bull got up and traveled500yrds through some of thethickest bush and across a 40ft wide river ,luckily it got stuck in the mud and finally dies of asingle lung shot ,but if it had not been stuck in the mud who know's just how far this brute could have gone ,I'm guessing wemight not have ever found him.The bull was beside a road after the initial shot laying down ,but after my bud started screaming that he hit him he ran like hell ,believe me when I say this became an all day job of getting him out apposed to an 1hr or 2 ,if he had just kept quiet and let him die .The first thing an animal will do is look for a place to lay down after being shot .
I agree if your sure it's a good shot 30 minute's should be enough ,butI'd sooner give the animal an1hr if I haven't heard or seen him go down.

nubo