i got a whippet, hes was my first running dog, works well in the day and on the lamp. hes got a quick recovery time between runs, will work all night. couldn't ask more from him hes 21.5 tts.
i had the same problem when i got my whippet ! my english bull x wouldnt accept the whippet at first. took a good few months and a cople of fights before they settled down. now they best friends lol. keep at it mate
ive just started going out in the day with my whippet on my permission. most i had in a couple of hours was 4, other days its been none. got loads of crows to take care of so i get to use the rifle for a bit as well