>>896820A bunch of companies make tackle backpacks fyi. I bought one for my little brother and it is pretty cool. Otherwise there is nothing wrong with a regular backpack and throw some flat Plano boxes inside.
I have a Plano 3700 bag that I've had for years and years. It weighs like 30lbs with all of my shit in it and digs into my shoulder when carrying it. Then I have a little lunch box packed full of soft baits that is probably 5lbs or more. I need to downsize but most of my lakes I park right by the water and just set the bags on the shore and walk around without them.