Replying to Lincoln Loop Help

So this weekend I was trying lincoln lincoln loops and I have been having problems with them. I tried about 15 times and I would either land really back seat and ride away on my boots, or I would get about 80% of the rotation and just stop rotating and land on my side. Another problem would be if I tried hucking it super hard to get the full rotation I'd spin a 180 and almost do an under flip. Any tips so I can hopefully land it today? Thanks.