You need to be boosted in the corner then use the streak in the middle to aim as well as dot with a bunch of scratches on it to aim for height.

Nade Time till goes off : 3 seconds
Smoke fade: 21 seconds after throw

Nade Ranking (stars are rated as 5 is the worst and 0 is the best, so the more stars the more challenge/time/difficulty/risk)

Setup Time: ★★☆☆☆ (approx. 5-6 seconds)
Practice till Flawless execute: ★★☆☆☆ (approx. 3-4 attempts till you can hit it regularly)
Cost of Failure: ★★☆☆☆
Throw Difficulty: ★★★☆☆ (Can be easy with practice)

Nade Overall Rating: ★Occasional★
|| Occasional- Someone who has utility occasionally but doesn't practice ||