Congrats on your first fish Tribal.
It really is addictive.
As far as shot percentage... some times you be smokin'... like 10 fish in a row, a miss and then another string of hits... other days it will be the total opposite.
On a good day I'll average about 60% hits. (with my new bow and a spiffy carbon fiber arrow) On a bad day, I'm lucky to be getting 20% of the fish I shoot at.
You'll get better as you get used to it. (shooting instinctive, refraction.. etc.)
next you'll need a boat... a generator.. a fan motor...