GTA 3 : Last Request

Open cheatbook & checkout what to do

I have got these cheats but no one is for skipping or completing mission
All Weapons=GUNSGUNSGUNS
Money=IFIWHEREARICHMAN
Full Health=GESUNDHEIT
More Police wanted level=MOREPOLICEPLEASE
No Police=NOPOLICEPLEASE
Spawn Tank=GIVEUSATANK
All Cars Explode=BANGBANGBANG
Changing Outfit=ILIKEDRESSINGUP
Everyone Goes Mad=ITSALLGOINGMAAAD
Everyone Hates You=NOBODYLIKESME
Everyone Has Weapons=WEAPONSFORALL
Speed Up Time=TIMEFLIESWHENYOU
Slow Down Time=BOOOOORING
Full Armor= TURTOISE
Clear Weather=SKINCANCERFORME
Rain=ILIKESCOTLAND
Thunderstorm=ILOVESCOTLAND
Fog=PEASOUP
Fast Weather Cycling=MADWEATHER
Invisible Cars=ANICESETOFWHEELS
Flying Cars=CHITTYCHITTYBB
Great Steering=CORNERSLIKEMAD
Detachable Limbs=NASTYLIMBSCHEAT

Get the game walkthrough
*www.gamefaqs.com/computer/doswin/home/548931.html

Hi friends
I want to know how to complete the GTA 3 mission 'last request' whenever i take boat to the blue mark ( pink mark on redar ) it dosent give anything and whenever I press enter it says 'mission faild'. pls help