Southwester Dory Trailer

I was about to email CLC for this info, but I thought if it gets answered on the forum it will be documented for the next person… I’m trying to get an idea of how the SUT-500-S18 trailer+boat combo will fit in my garage. The boat is 18’ 10", which fits with enough room for me to get around the ends with the door closed. The trailer is 18’ 3". It appears in photos that the boat sits right forward on the trailer. I’m estimating the overall length of the combo at 21-23’. If you happen to know how close that guess is, please let me know.