So I popped down to my local minor crag, Kemple End. There are in situ belay stakes and rope extenders for easy top rope setting. They are running through some undergrowth and are generally a bit green. Would you use these?
I think that by asking the question you have answered your own question. I reckon that if you find yourself in the position where you ever feel the need to ask someone else if you should use in situ gear then the answer is always no. If there is even the smallest doubt in your mind then don't use it - or back it up with something bombproof.
Yeah I hadn't planned on using them really, it was more out of interest really. I know rope takes a lot of punishment but looks like that may have taken some biological damage.
I recognise that rope as John Proud's current climbing rope it started as an 50metre, 11mm (30 years ago). He'll be back for it soon as he'll need it for his next project. John's the crag moderator.