I am no expert, but you know sighthounds and recall....
I trained Rudy as below, it is meant to be very effective. (I have C&P'ed it from a thread I posted it on another day, if any of it reads funny)
For recall I would thing about training to a whistle as it carries no emotion like your voice so you can instantly avoid lots of issues. The training is Pavlovian and goes like this-
Buy whistle
Every day for a week before feeding a meal, blow the whistle (I use three quick pips, you may use what you wish).
You now have a dog that associates the whistle with food and will salivate on hearing it, half the battle is won.
For the next few days (when possible) get someone to hold him at increasing distances from his bowl at mealtimes, blow the whistle,
feed him.
Now you have a dog that knows on hearing the whistle he must run to you then he gets food.
Now abandon the feeding thing and blow the whistle at random times, start very easy, ie when the dog was wandering towards you anyway, when he reaches you he must get a magnificent treat (chicken, hot dog, liver cake etc) and he must get it instantly.
Keep increasing the distance in house, garden, even hide a bit, but work at his pace so he is always successful.
Now start outdoors in a safe area and again build up.
Imortant points, go not let children etc randomly blow the whistle for fun, always have a treat at the beginning, though once he is doing well outside, start rewarding only the best responses, this will make him work harder, but don't become stingy! Most recalls should be food rewarded and all others with praise, never become complacent. Don't ask him to do other things on his return to you (like sit), this is slightly skewered training, and for it to continue to work it need to be on the simple basis of 'hear whistle, get fed'. Once trained, don't forget your whistle!
Rudy was trained this way from 10 weeks and his recall is atm 100%, I can even turn him from squirels, however I am aware that he is very young and as he matures and his prey drive increases this may well not be the case,but I feel he has a good grounding.