Yep bin there APU and got the same problem:( Not however had a BB civvie for some time now but when we did, was excellent:))
However with the olde rubber thats it, very difficult to maintain even with the bigger skyns and the like, but the Bluies do help but they I find make it more difficult to cum.
So in a way accept this as a funnction of the chances of obtaining young civvie hotties are not that easy, at my age, but we have done that but a few bob for a WG and you know what your in the main going to get is a muct easier path.
Have a go with Viagra you can get them at Asda pharnacies just fill out a form that states if you are taking other drugs are suffering other illness etc and thats it. They'll give you a little paper slip just show that to them when you go next they are cheaper online but initally this will do and try them and see.
As others have said empty stomach, around an hour before the bonkin, and lots of water is a good idea.
And let us know how you get on these real world practical experences are quite usefull information to have:)