How can i dampen the force when it is still? skinned mesh

local Boat = script.Parent
local BodyForce = Boat:WaitForChild("Force")
local WaveGenerator = require(game.ReplicatedStorage.Wave2)
local DeapthBeforeSubmerged = 1
local DisplacementAmount = 3
local WaterDrag = .99

local function FixedUpdate()
	local WaveHight = WaveGenerator:Init().GetFloatation(nil,Boat.Position,Vector2.new(Boat.Size.X,Boat.Size.Z))
	local WaveHightYAxis = WaveHight.Y
	--print("WaveHightYAxis is "..WaveHightYAxis.."And the boat Position Y is "..Boat.Position.Y)
	if Boat.Position.Y < WaveHightYAxis then
		print(true)
		local DisplacementMultiplier = math.clamp(WaveHightYAxis-Boat.Position.Y/DeapthBeforeSubmerged,0,1) * DisplacementAmount
		BodyForce.Force = Vector3.new(0,math.abs(workspace.Gravity)*DisplacementMultiplier*Boat:GetMass(),0)
	else
		print(false)
		BodyForce.Force = Vector3.new(0,0,0)
	end
end
while wait() do
	FixedUpdate()
end

i tried to convert as much C# as i can im pretty sure i got every thing working except that it keeps bouncing