Just my own opinion....but I would not try to cross the channel in ANYTHING under 30 ft.[/QUOTE]
Thats certainly safer and more comfortable- than a 25
bit just a bit overly cautious IMHO.
No doubt there are times when you'll need to "have a pair", but pay attention be careful and you'll likely be fine. Make sure mechanically you are ready.
People have been going there for decades in 19ft boats before they realized they all "needed" 42 ft fountains.