Hi vikki.
Can’t say I’ve had much to do with a jacks but if food orientated like most dogs, Ild just take him in the boat at dock a few times and give him plenty of treats.
He’ll soon learn being in the boat to be a positive experience, and won’t mind it so much once out on the water.
With my sib we got my dog to jump in and out with it set up in the garden for a few days for treats, and he soon got it.
Same conditioning with treats for the life jacket.
Another thing we did was let him watch us leave and come back in the boat a few times with him watching from the car.
I think in his mind he wasn’t having it being left behind, and he figured the boat was the lesser of two evils.
Now when setting up we leave him in the boot of the car until we are completely ready to go, and he barks like mad because he thinks we are going to leave without him.
The second the trunks open, he shoots down the pontoon and jumps straight in the sib.
When out on the water he listens to the outboard and reacts to the noise. Wide open or if a bit choppy he mostly lies down and goes to sleep. But if just cruising along smoothly he loves to stand up looking out.
Not a great quality video below but you get the idea, and we are better at keeping the deck area clear for him now
Only thing to be aware of is a vet told us some older dogs can get issues and can become seriously unwell with the motion and inner ear (can’t recall the name of it).
We did think or dog had it on our last trip and rushed him to a local vet in Oban, but turned out he had eaten someone’s leftover drugs from a camp fire on an island we visited, so basically was stoned out of his face.
But we nearly lost him, but after an overnight stay he recovered and is as bad as ever now
https://youtu.be/fA8VzMwcAhY?feature=shared