Trailer for V21????

[livewell]

I am working a deal on a V21 right now... It does not come with a trailer. The dealer has located a trailer that is for a 23 foot boat but seems to think it can be adjusted for a 21 ft.

The question I have is... it is a roller style trailer instead of a bunk trailer. The two boats that I have owned were both bunk style trailers. Any thoughts for or aganist this for a V21?