Hi Rate1

My Goldberg Ultimate (YS120) is covered in Solartex and sprayed with Hobbypoxy (No longer available) . There is a slight weight penalty because the whole insides has adhesive coating - probably no worse than coverall tho'. There is another brand (Ceconite lightweight) which is similar to Coverall (plus dope) but I'm not sure of any European sourcing - try the www ?. Solartex is pretty tough stuff but will not accept a steel tent peg dropped from a height of more that 1/2 metre (and I know this to be true)! I shall use this on mine as I've never had a problem with lifting or bubbling - and its now 15 yrs old!.