I know they have alternatives to Monokote like Ultrakote and such.......something simple for the skyray....

 but I have a Combat Kittens kit and will get a Lil Satan kit from sshobbies soon and will use something lighter... Just dont care to put in hte time and hassle of dope and silspan unlike my dad who swears that silkspan is the best..........Altho I dont doubt it lol