When I offset or convert a spline I get a jumble of vertices and control points in a sketch. Is there any way to turn these off. Usually I do not want to manipulate these, just want to use them as is in a sketch. Thanks in advance for any help. 
When I offset or convert a spline I get a jumble of vertices and control points in a sketch. Is there any way to turn these off. Usually I do not want to manipulate these, just want to use them as is in a sketch. Thanks in advance for any help.
Thank you Matt. I have found this but it does not solve the problem. When I convert or offset an edge based on a spline or derived it breaks up the sketch entity into many many small control vertices. It does not always start that way, but after a few other options, it seems to convert it then add the control polygons to every tiny segment. Thus, it creates huge distraction. You can barely select the converted entity for all the points (tries to select the point not the line segment). So, trying to avoid this happening each time.
Have you tried simplify spline?
RMB and disable Display Contol Polygon