Does anybody struggle to sleep in a cab during the day when tramping on nights?
Depends where you can pull up for 9 hours…
MSAs - there must be quiet corners of every one in the country.
Laybys? - If you can get a space in one, if not occupied by other artics, there’s invariably some old banger or white van man who’s parked up right in the middle, thus shutting out as much layby space to any artic trying to get in there as possible…
On a more positive note - I notice around and about that some previously “shallow” so-called “Suicidal” laybys have been extended with kerbs to make them into deep laybys, offering better protection from runaway traffic, including other artics that may have found no place to park up in time, before being overcome by fatigue. 
Winseer:
Depends where you can pull up for 9 hours…
+1…
Some of the places that I tipped/loaded at would, if you asked nicely, let you park up in their yard. Aside from the obvious park somewhere with some sort of facilities, the only thing I tried to do was work out which way the sun would be during the summer months and try and park in the shade.
9 times out of 10 if I was woken up, it was by gobby lorry drivers.