Agreed - don't cast so far. I find 5m a bit short, personally, but certainly wouldn't go much further than 10m if you are having stamina troubles. As for fish not biting, they are not the right fish for your bait. The update introduced multiple bait types, one for each biome. Except fish from every biome can appear pretty much anywhere, so even with the right bait in the right biome, some fish will not bite.