sunday life cryptic

[countrywalksgirl]

I am left with two clues
18 ac If asked his occupation would he give a stock answer R?n?m?? ( would it be ringman??)
17 down Bends the back and vaults ???h?s ( second letter is the last letter in 18 ac) Surely it cant be inches??
I would appreciate your expertise...........thank you

[quinie]

17d arches?

[boxtops]

a ringman works in a stock auction, so yes, it could be that

[quinie]

18a rancher?

[countrywalksgirl]

Thank you both.......i had motel which threw me completely.........should have been hotel so rancher is right..........many many thanks

[Exmothian]

... Should it have been hotel rather than motel since ringman and rancher both look like possible answers ????