I think the OP means other measures you can take APART from saddle and bike fit to avoid problems.

I mean that one day you can ride 100km and everything is OK and another day you ride it's not. And often it's due to OTHER factors, not your bike.

I also have to try other ways for reducing discomfort. When I ride stoker on the tandem you cannot shift yourself around or stand to coast as much as you can on a single- so I have to use other methods to reduce discomfort on some of my rides.

I would rub a bit of chamois cream onto the saddle. I find that having a bit of slip means the shorts etc don't catch and pinch. I found this out as chamois cream often sinks through the shorts and greases the saddle.