A friend bow shot a boar a little far back and called me to see if i could track it with my 8th month bmh. The trail was around 16hrs old. We set off well and about 400m into it found the broken tail section of the arrow still seeing no blood. Another 400m on we lost the scent and after circling with the dog a couple of times i couldn't get him motivated again (we had been stalking all morning) or he simply couldn't find any scent. Rather than spoil any more of the trail we left it and he has a more experienced dog coming in tomorrow.
My question is, was i correct to stop where we did or were there any other options open to me? Could i have rested the dog and continued? How many times do people tend to take the dog back to where they had positive scent and retry?