Disaster advice

On what type of feature? Double kinks can be scary because if you dont go fast enough you land on the flat before the down and can really f your self up. Best advice is to hit the rail a few times to get a feel for the speed. If you really want you can just hit the kicker and miss the rail while a friend watches. He will be able to tell you if that speed was enough to land where you want.

Most smaller stuff is pretty easy to gauge speed in my opinion. Think about it like a flat low jump. Also if it's a dub kink it's down a bit as well. Maybe don't try it on the longest steepest dfd first where if you come up on the kink your legs will snap off, but otherwise not too bad.

If it's some ridiculous gap I'd say airing it to the side to gauge speed might not be a terrible idea, if nothing else to know the feel of hitting the jump and know that you'll be 100s if you hit it like that.

Otherwise it's pretty much like any other slide just faster, and if it's a huge one maybe some compression.

disaster to flat or else youre not cool. dont pop off the lip just bend your knees up and get ready to fuckin ball out

just go fast. only advice. worst case scenario you just gap the whole rail.

https://www.fema.gov/

if its on a flat down just go fast and look down the rail
if its a double kink or more just go faster and look down the rail
also remember, if ur not going fast enough, Bail! cause if u land on the flat u might go flying off and that is not ideal

make sure ur comfortable with your speed