Loose arrangements would be my preference as well. I'm a member of a motorbike forum, UKGSER, it has a section for specific organised events as well as an "open invite" section, that can be broken down into regions,South West for example. Someone posts up they're driving out to The New Forest stating a meeting place and time, then see who turns up. Sometimes the least planning days out can end up being the most memorable, for whatever reason!
