Ok sorry to disagree but you did ask for ''advice about dogs'
and as a frequent dog transporter/boarding kennels owner I thought I should advise against it, of course its your van, your call
We have a dedicated and properly fitted out dog van, its was previously owned by HM Prisons dog handlers, with very sturdy and lockable enclosures.
Ours came from the "Dog Van Man" in Gainsboro, highly recommended, I think this is him:
ex police,dog van,ford smax 2.0 tdci estate 2 cages security unit 2013...1 owner | eBay
Just to clarify, ... but are you licensed? Home boarding or Daycare requires a license under the Animal Welfare Act. If you have an accident at home or whilst transporting dogs, ie a business related journey, you could be in serious bother if unlicensed
Also without a tailgate guard, the dogs will need manually restraining
as the tailgate is lifted... just a few inches and they will want out before you can duck under it to restrain them, especially with several in one section. Sorry again but this should be done properly for the dogs sake