same here, i did a thread on it but would not know how to find it now if you want to look but basically i put a sign in the window saying casual driver needed. i give him 40p per mile for petrol and then £5 an hour cash, he just does when i need him but mostly i will just put a sign in the window and nip out. People will come back i have found cause they will tell me when they have called earlier. hope this waffle helps