You didn't mention the likely speed or distance for this move, but two things occurred to me:
1) Without a battery, the breakaway system to apply the trailer brakes would not function; not safe and not sure of the legality.
2) If the cover (or straps/ropes) became entangled, that could damage your cover or trailer.
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.