Hey noelfish,
whereabouts in tasman bay do you want to fish?
Rabbit island looks to be a good spot to launch a kontiki.
For drone fishing you'd have to go a bit further away from Nelson due to airport restrictions.
I think rabbit island is a no fly zone.
Kina beach could also be a good spot for sending out a drone or kontiki.
There a some pretty good places over at golden bay for drone and kontiki fishing.
a snapper a day keeps the doctor away