there are no numbers as to how many leak.
all hybrid manufacturers have had units that leak. Jayco, Roo, Shamrock, Cub, Kodiak, Starcraft, Trail-Lite, Surveyor, Wildwood, Fleetwood, Palomino, KZ and so on.
FR sells a lot of Roo/Shamrock/Surveyor hybrids. like with all companies, some are victims of bad quality control at the factory and some are victims of inattentive owners.
there are no figures. one has to do the research and take each post with a grain of salt. there are at least 6 different hybrid forums i frequent and on the older ones, i spent 2 years of researching hybrids, all brands.
i ended up with a Roo, due to floorplan, quality of build and pricepoint.
that said, i've had my Roo for 6 years now and no bunk leaks.
and Zoe the Wonder Dog(R.I.P.)
'07 Roo 23SS pushing an '07 Chevy Avalanche
Equalizer WDH and Prodigy BC