i have 2 that are 64 inch...one 62 inch...and a host of others that are vintage brownings in all sizes. I have hunted with 66 and 68" longbows and selfbows in same stands as with 64 and 62" recurves...both tree stands and ground blinds. No issues.
My 62 is a Jeffery Royal Hunter...first recurve...1992
64" Habu...got it in 1999
58" Wolfer...got in 2014
rest are from 56 to 62...and are vintage Brownings such as Explorer, Explorer I, Explorer II, Safari II, Wasp, Cobra II.
Robertson Fatal Styk, Habu, Blacktail are three of the best I have ever shot or owned. I think I would rate the Robertson recurve as the best all around of the 15+ I have owned over the past 20+ years.