Practice Crossbow Carting with a Quick Charge V crossbow: /give @p crossbow{Unbreakable:1,Enchantments:[{id:"quick_charge",lvl:5},{id:"piercing",lvl:4}]}
Powered rail is the best type of rail for crossbow carting. Unlike insta carting, you pre-place the cart before shooting it when performing crossbow carts. Since you are also placing the rail as close to your opponent as possible your opponent may likely push the cart into the fire. This is where the powered rail's core feature comes into play. Powered rail reduces the momentum of the cart resulting in the cart getting pushed less than it otherwise would with other rail types which increases the likelihood of crossbow carts landing (instead of the arrow breaking the cart).
@@saikgamingproductions Without shooting the crossbow, the cart would explode on a timer of 0 to 40 ticks once its hitbox enters the fire (95% sure it is up to 40 ticks, other 5% would be 80 ticks). In the case of crossbow carting, for every pixel the cart gets pushed, one less carting distance leeway you would get. For example, normally you would have a one-block leeway for crossbow carting as fire is one block in width (aka you crossbow cart with a gap of 3-4 blocks from the cart for most situations), but if the cart gets pushed half a block into the fire then you would only have a half-block leeway for crossbow carting as the arrow only has 0.5 blocks worth of distance to catch on fire before hitting the cart (so with the cart pushed half-way, you can only crossbow cart 3.5-4 blocks away from the cart for most situations).
Cart zero cycle is indeed possible, but I believe that one cycling is slightly more practical since the primary purpose of using carts isn’t for consistency but rather a minuscule time save. For speedruns, cart cycling is more of a SSG/TAS strat due to its reliance on RNG. I could be mistaken, but I think an insta perch is faster than a zero cycle (with dragon death animation included). Additionally, most zero cycles require either a pearl or an abundance of blocks to reach the required height which could be tricky to obtain in a timely manner.
"No cheesing" was meant as no cheesing the fight. Teleporting to the location does not impact the fight itself, it just initiates the fight. Examples of cheesing enemies in video games could be trapping your enemies or abusing bugs to gain the upper hand.
The one at the start is a flying machine designed by @meowphedrone that drops a TNT minecart for every block it moves similar to flying machines with TNT dupers. The link to the building tutorial for that flying machine is in the description.
