that was one of my questions Dan. how do you ingress(enter) and egress(leave)? over the tubes?
it would seem that is the only way in the above boat
EDIT*** i realized that I tend to use strange and uncommon words, this is a personal choice, i very much like language and words and I enjoy them a great deal. however, it just occured to me that one of the best things about this forum are the international members and I dont want to make things tougher for you guys who are speaking several languages or using translate programs.
I will always try to add simpler words as well, or only use more basic words, but please don hesitate to aks me or tell me if I have chosen a word that means nothing to you

all the best