Trying to create a rocket launcher that flings instead of damaging, Don't know where to start?

This is my first true experience with coding, and I'm stuck on trying to add knockback to the rocket launcher blast and removing damage from it altogether. I've been using the UristMcSparks rocket launcher from reference. I've played around with configurations and nothing seems to change in the way I intend.

Is there a good starting point for me? And what additions/exclusions to the code should I change?

-----------------
--| Constants |--
-----------------
local BLAST_RADIUS = script.Parent.Parent.Configurations.BlastRadius.Value -- Blast radius of the explosion
local BLAST_DAMAGE = script.Parent.Parent.Configurations.Damage.Value -- Amount of damage done to players
local BLAST_FORCE = script.Parent.Parent.Configurations.BlastForce.Value -- Amount of force applied to parts

local IGNORE_LIST = {rocket = 1, handle = 1, effect = 1, water = 1} -- Rocket will fly through things named these
--NOTE: Keys must be lowercase, values must evaluate to true

-----------------
--| Variables |--
-----------------

local DebrisService = game:GetService('Debris')
local PlayersService = game:GetService('Players')

local Rocket = script.Parent

local CreatorTag = Rocket:WaitForChild('creator', 60)
local SwooshSound = Rocket:WaitForChild('Swoosh', 60)

-----------------
--| Functions |--
-----------------

-- Removes any old creator tags and applies a new one to the target
local function ApplyTags(target)
	while target:FindFirstChild('creator') do
		target.creator:Destroy()
	end

	local creatorTagClone = CreatorTag:Clone()
	DebrisService:AddItem(creatorTagClone, 1.5)
	creatorTagClone.Parent = target
end

-- Returns the ancestor that contains a Humanoid, if it exists
local function FindCharacterAncestor(subject)
	if subject and subject ~= game.Workspace then
		local humanoid = subject:FindFirstChild('Humanoid')
		if humanoid then
			return subject, humanoid
		else
			return FindCharacterAncestor(subject.Parent)
		end
	end
	return nil
end

-- Customized explosive effect that doesn't affect teammates and only breaks joints on dead parts
local function OnExplosionHit(hitPart, hitDistance, blastCenter)
	if hitPart and hitDistance then
		local character, humanoid = FindCharacterAncestor(hitPart.Parent)

		if character then
			local myPlayer = CreatorTag.Value
			if myPlayer and not myPlayer.Neutral then -- Ignore friendlies caught in the blast
				local player = PlayersService:GetPlayerFromCharacter(character)
				if player and player ~= myPlayer and player.TeamColor == Rocket.BrickColor then
					return
				end
			end
		end

		if humanoid and humanoid.Health > 0 then -- Humanoids are tagged and damaged
			if hitPart.Name == 'Torso' then
				ApplyTags(humanoid)
				humanoid:TakeDamage(BLAST_DAMAGE)
			end
		else -- Loose parts and dead parts are blasted
			if hitPart.Name ~= 'Handle' then
				hitPart:BreakJoints()
				local blastForce = Instance.new('BodyForce', hitPart) --NOTE: We will multiply by mass so bigger parts get blasted more
				blastForce.force = (hitPart.Position - blastCenter).unit * BLAST_FORCE * hitPart:GetMass()
				DebrisService:AddItem(blastForce, 0.1)
			end
		end
	end
end

local function OnTouched(otherPart)
	if Rocket and otherPart then
		-- Fly through anything in the ignore list
		if IGNORE_LIST[string.lower(otherPart.Name)] then
			return
		end

		local myPlayer = CreatorTag.Value
		if myPlayer then
			-- Fly through the creator
			if myPlayer.Character and myPlayer.Character:IsAncestorOf(otherPart) then
				return
			end

			 -- Fly through friendlies
			if not myPlayer.Neutral then
				local character = FindCharacterAncestor(otherPart.Parent)
				local player = PlayersService:GetPlayerFromCharacter(character)
				if player and player ~= myPlayer and player.TeamColor == Rocket.BrickColor then
					return
				end
			end
		end

		-- Fly through terrain water
		if otherPart == game.Workspace.Terrain then
			--NOTE: If the rocket is large, then the simplifications made here will cause it to fly through terrain in some cases
			local frontOfRocket = Rocket.Position + (Rocket.CFrame.lookVector * (Rocket.Size.Z / 2))
			local cellLocation = game.Workspace.Terrain:WorldToCellPreferSolid(frontOfRocket)
			local cellMaterial = game.Workspace.Terrain:GetCell(cellLocation.X, cellLocation.Y, cellLocation.Z)
			if cellMaterial == Enum.CellMaterial.Water or cellMaterial == Enum.CellMaterial.Empty then
				return
			end
		end

		-- Create the explosion
		local explosion = Instance.new('Explosion')
		explosion.BlastPressure = 0 -- Completely safe explosion
		explosion.BlastRadius = BLAST_RADIUS
		explosion.ExplosionType = Enum.ExplosionType.NoCraters
		explosion.Position = Rocket.Position
		explosion.Parent = game.Workspace

		-- Connect custom logic for the explosion
		explosion.Hit:connect(function(hitPart, hitDistance) OnExplosionHit(hitPart, hitDistance, explosion.Position) end)

		-- Move this script and the creator tag (so our custom logic can execute), then destroy the rocket
		script.Parent = explosion
		CreatorTag.Parent = script
		Rocket:Destroy()
	end
end

--------------------
--| Script Logic |--
--------------------

SwooshSound:Play()

Rocket.Touched:connect(OnTouched)