We are installing a new engine and are fitting an internal strainer instead of the "scoop" type that was fitted before on the outside of the hull covering the intake flange. As the new strainer will be above the waterline I should be able to clean the intake if I don't put a new "scoop" over the intake flange by poking a round brush all the way through the strainer, valve and flange without having to get wet by diving under the boat periodically. Is that an accepted strategy or should I still install a "scoop" strainer on the outside to deflect possible rubbish being sucked in?