The only thing ive really used harry for is being lazy.
My fleet burns at 9 and damn near everything except massive capital fleets (attempts to) run away from us.
Once combat starts we're lucky to kill 1 or 2 ships due to shields / retaliation from PD.
Harry, catch, harry, catch, harry, Catch, engage.
Then the opposing ships just cruise thorugh space nice n slow like. So you can pick em all off and walk away with a big bag of supplies and cash. (on and destroy any boardable ships, that mechanic is dumb, rare, and slows the pack down when you have to drag its sorry carcass to the shop. while scuttle doesnt return any decent amount of supplies.)