game.Players.LocalPlayer.Character.fly_part:Destroy() -- if you execute this script two times
local Part = Instance.new("WedgePart")
Part.Parent = game.Players.LocalPlayer.Character
Part.CFrame = game.Players.LocalPlayer.Character.HumanoidRootPart.CFrame
Part.Anchored = true
Part.Size = Vector3.new(5,5,5)
Part.Transparency = 0.8
Part.Name = "fly_part"
while wait(0.01) do
    game.Players.LocalPlayer.Character.fly_part.CFrame = game.Players.LocalPlayer.Character.HumanoidRootPart.CFrame
end
-- good luck