Scamp uses "closed cell foam" weather stripping sort of like what the big box stores sell for around window AC units. Very "spongy" so can compress for the tight spots but fill the gaps.
Can be purchased or ordered pretty thick, local hardware store has it in stock at 7/16 of an inch (11 mm). I think stock on
scamp is 1/2 inch (13 mm) with maybe 3/4 inch (19 mm) on bottom edge
Page is for one size and lists some others further down.
http://www.amazon.com/M-D-Building-P.../dp/B000NUY4Q8
It's on my to-do list also, noticed the
light coming from around lower part of door on camping trip.