Just ordered a set off of iboats here.<br /><br />Browsed through the topics on the subject and only had two leftover questions.<br /><br />1) Do these inhibit backing to a great extent? They would seem like it as they will be fully down when backing. Not a major deal just curious.<br /><br />2) I pre-browsed the install and was wondering if the zincs were included? If not any idea on which are the best best to install?<br /><br />Thanks for all your input!