Hi george. Hydras are pretty easy when you get the hang of it, but yeah can be hard without the right gear/suppluys. First u need to choose a good island,like e7 or e5 or f7, not too many hard monsters and the spawn is close to beach. then the gear. u want 1 loaded carbine,2-3 loaded pistols. and a tiger/lion thats fast if the hydra is deep inside, and u can jump back on boat, u can run quickly and shoot it far away from mount. or u take a glider and go find it,shoot it glide towards boat,shoot again so u dont loose aggro, then also have full plate set,med kit,monkey. Weapons on boat, i rekommend a catapult with 4-6 barrels,or cannons (4-6 back cannons)if u have like 150-200 cannons with u. I prefer cannonballs because of the long range instead of cannister shots,
and if u have a sloop with no cannons, juat take it out in the ocean and it will drown here is a video, its a good spawn,but my tactic works for most of the islands.we completed last week 7 powerstones in 10hours straitght, With 2 of my friends. on pvp server,