you should learn c4 drop
not the recovery trick but when youre in midair above the stage drop a c4 so if the opponent tries to juggle you(which pisses me off) you detonate it when they jump
idk if u can understand that but it has won some matches for me
That has gotten me so many kills too. Part of being an expert snake player..actually a very large part is how you use your projectiles. Its easy to drop c4 on the ground and activate it when your opponent's guard is down. But can you use it in other ways like how Cheeta has mentioned. But there are many other ways to use your projectiles. Try some of these techiques:
Using C4 to activate a Landmine (your Down +A smash attack). If you can do that you can go a step further. You can use C4 to activate Grenades and Landmines. For example: I won a match because I set a C4 next to Landmine and tossed two grenades at my opponent. I didn't "Cook" them because I knew he would try to jump over them to get to me. So when the C4 is set on the left side of the Landmine and one Grenade is bouncing above the Landmine and the other Grenade is above that one. I activate C4 which triggers the Landmine which triggers the Grenade triggering the other Grenade forming an "L" shape. The result was my opponent was hit by the Grenade that was higher up in the air..killing him.
If you can create paths and shapes with your explosives and chain off of them thats pretty advanced. You can also do the same thing with Nikita (the forward+B guided missile) by using it to detonate some of your others explosives.
Also consider how skilled you are using Mortars. Its good that you can Mortarslide but you can expand on it and combo off of it. You can use your U-throw to toss someone into an airborne Mortar after Mortarsliding for a surprise 20%+ on your opponent. You can go a step further off of that and use a U-Tilt or U-Air after doing that.
Being pro with any character has a large part to do with taking existing concepts and making them your own. Any Snake can Mortarslide but can you combo with it?. Most snakes know that Snakes F-Tilt and U-Tilt are great moves but can you use them in a different way?
Part of being a great Snake player is realizing that you have so many options in your arsenal. You have limited moves but so many ways to use them. Being a pro Snake in particular requires timing and patience and the ability to stay 2 steps ahead of your opponent. (Like Shikamaru if you watch/read Naruto at all) Mind games are key for long range characters. Snake can only really surprise people with Mortarsliding (which becomes rather easily predicted after a while), C4 (if your careful and watch the ground you can see it) and Landmines (same concept as C4). His Grenades don't explode unless hit with fire or after their time has expired in others words you can see them coming. Nikita is extremely obvious to spot. Its slower than Samus' missiles. So you have to get tricky with these projectiles. I personally find that shooting Nikita directly at someone then arcing up slightly then canceling it with the L or R button works wonders for psyching people out. And if your deceptive enough you can "train" someone to catch your Grenades. What good does that do you? Cook them and throw them at your opponent so that it explodes when they catch it or when they try to throw it. Quite useful. Theres more but I don't want to bore you if you're not feeling what I'm saying.
Anyway thats the end of my rant. Hope it helped.