disable the ramming damage from seamonsters would fix this content in the best way u could think of. just let the charge stun the monsters for several seconds so you can use it as an utility. but disable the damage so this content will be group damage again. i have no idea that group content will pay that much since you have to share it with your group and this game already lacks of group content. i even think this seamonster hunting is intented to be group activity. so just disable the ramming damage on seamonsters will quite fix the whole thing in my opinion.