Started on the JP49 with Neil Pryde RS6 in 5.8m2 and Finish Fast Speed 27cm fin. Top 67km\h.
Later changed over for"Maiden Trip"on my JP45 with Hurricane SR7 26cm fin. Top 72km/h
Fins can be a little bit smaller. I was surprised by the ease of sailing this JP45 with my älmost"100kg.