Hiding a Surface from Cross Sections

While working on a Site, I needed to make an interim Terrain element to drape my outer curbs on. Since I need to be able to update this surface and have these other features update to reflect the changed surface elevations, I must keep this surface. I created a "No Display" feature style of surfaces, but the surface level is what is used when looking at sections. How can I get a section view to hide this or any other interim surfaces and only show the desired surface?

While I'm at it, and I know I should only ask one question per thread, but what is the best way to turn off any crossing features in the cross section view? Sometimes I see symbols where the features cross and sometimes I do not. Trying to turn off levels seems to be and exercise in frustration as I try to determine what view & file do I need to use with the level display dialog box to turn them off and keep them off.