Eternabond prep and install advice

Thanks for the insight Larry. Good to know. I'd heard good things about it, anchoring cables down, wrapping corners and have seen pics that look like it fit around stuff pretty good, so, thought I'd add it on top of the feet. Might just use Dicor or something like that 3M Marine 4000UV you mentioned I guess. MrWizard I do have the 3M VHB on the bottom of the feet but am using well nuts instead of screws for a better hold through thin roof material.