Sewer slide valves

I got a piece of schedule 40 sprinkler pipe, cut out a notch for the valve handle, basically and made a long handle extension. No more getting on one knee and no more elec and cables messing up. I used a dremel tool to carve it out. Also changed out plastic handles for alum and put lock tight on screw connections.
I looked for pic's but this article explains it better than I. http://www.loveyourrv.com/tip-for-hard-to-reach-rv-waste-valve/

Ours worked fine.

I have electric valves on my 2013 Arctic Fox. They have been trouble free.

How good and or dependable are the electric valves and any operating issues?

When I had that same problem, I installed an electric one.