Oh i 100% agree this is a huge issue and has bothered me so much. You hit that 1k lb threshold and then have to bounce back and forth. I fond that setting your /binds for /fish really helps and I can just slide up and pop a fish and then spin around. I personally don't think its worth the time to do more than once or twice for the act of it.
incredible guide by the way, OP. this has been my sacred text since day one and will fund my new fishing empire >:)