Some TT have issues with water flowing out of the overflow when driving to your destination. Maybe some MH have similar issues.
I have a couple of corks I put in the end of my 2 overflow outlet tubes. The one time I forgot them, I left a noticeable trail of water as I left the CG.
Sherm & Terry w/rescues Steve (std Poodle) & Eydie (min Schnauzer)
2015 Jay Flight 27RLS (Camped: 102 nights 2015, 90 nights 2016)
2006 Ford F350 6.0 PSD, Lariat, 4WD, CC, LB, SRW, auto., Camper pkg.