Not to sound harsh but if you spent ages trying to reverse in the daytime on an assesment then night trunks might not be a good idea.
Many times with night trunks you arrive at a place and it can be a madhouse with trucks and shunters moving about everywhere, not to mention itll be dark and the possibility of it raining. You also have the 5,000,000 watt spotlights and maybe a blindside reverse onto a bay.
Course you might also just do a simple trailer swap at a services but they arent all like that. Im not having a go or anything because up till a few years ago I was lucky if I was still in the right yard after id finished reversing!
Can I ask why you want night trunks specifically?