Crooked arrow gains benefits from both of the row's it ocupies so if you want to trade even more space for maximum arrow damage (excluding trading all your space to max out electric arrow) you can. Duct tape allows effects to travel farther than normal for example say your doing a cleaver run you can have the max number (except for one spot of duct tape) of cleaver connections on a king cleaver and then that duct tape could carry other cleaver effects to and from the king cleaver. Or with duct tape you can have more shields connected to herculeus.