Fishing from big boat and small boat call for different approaches , on a big boat the angler can exert a lot more initial pressure while on a small boat , exerting heavy pressure will just move the boat toward the fish hence " engine power " needed to help the angler maintain heavy pressure .
Twin powered boat makes manouvering easier than single powered boat when trying to get the angler positioned in favourable situation when fighting big stubborn fish , moving the boat slowly while the angler maintaining pressure with good stance is the better way than galloping away causing the angler to lose balance which can cause injury or tackle damages .
An experience skipper should weigh the situations before the angler cast into the strike zone , meaning anticipating current and wind directions as well as obstacles around the boat where the boat must manouver to give the angler the advantage .
Just my experiences fishing from a 20+ ton boat with 1000 hp inboards to a small narrow boat with 15 hp outboard .
Jon .