Why not fit the flooring first then get the plumber in aftyer to fit the connector properly?
I do wonder why some people seem to think that flexible pan connectors are the devils own creation.
Where there is an awkward fall or connection run due to a badly sited soil waste pipe, I have found a McAlpine flexi's have worked well.
Like everything it's all down to being fitted correctly without too tight a radius, with the correct level of fall and fixed squarely onto the spigot and into the soil pipe and then the toilet being fixed securely to the floor. With all that done correctly then I find they can be an excellent solution for what's sometimes an awkward problem. I have used them without any issue or call back due to leaks/blockages.
Thanks for that advice. Actually, after posting my last reply here and having another think about it, what you suggest had also occurred to me i.e. put down the vinyl flooring and then get the plumber in. Seems obvious now but I must have been in another mind-set about the problem so it took a while to dawn on me. You were ahead of me!
I note what you say about the bad press that flexi connectors get but I'm still going to get a 'proper' plumber in. But thanks again.