Nope, cork 5 is just an off axis spin like any other cork. I have no idea what a Lincoln 1 is. I've done a few without poles and they are the easiest flip ever
Some face bounces to warm up then I like to practice my screaming seamans and land funny and fly backwards off the trampoline and get a concussion ... Just an average sesh
flip less, spin more. at some point you'll learn how much spin vs how much flip to throw and it'll come around really easily. i had just landed cork 9's once or twice and i went for a 10 and my body just knew when to do what and i landed it first try