I get it to follow me to ground(out of the water), and then face the kapro and run to the side to dodge its jump. Always keep looking at it!! Try to stay close to it and run circles around it ( important to stay behind it ), then shoot it with tranque arrows.
Need one? Say no more, shoot with knockout arrows, bring atleast 50 because they live in a place with alot of other creatures,step two, lure away from swamp so it doesn't get killed by a sarco or piranhas ,step three put in meat and protect with life.