My stupid re-silicone questions!

[Coasting]

Is it easier to pull off fresh silicone then old silicone? like 12 hours old?

I'm livid! I trusted my father to help me silicone the tank and he made the biggest mess possible! Not only did he not listen to a single thing I said in regards to how thick and where but he starts going over it again with his fat fingers making a mess after its starting to set! "Oh you wont see it" Its a tank am I never going to look at it once its full or something?

I think its fully sealed but it looks like crap in the back 2 seams! He didn't even give me a chance to tape the back corners. Theres disgusting smears and finger prints coming out more then an inch from the corners. Is it easier to just pull it all off again and re do it? (seriously ready to pay one of you guys to do this, cash in hand!)

I'm going see how bad of a mess it looks in the morning and if I can simply use a blade to fix this up or if I should spend the next week ripping this silicone off to re-do it. Oh hey and the kicker... for some reason he assumed I wanted the top black brace futher siliconed to the tank so he starts running a bead along the edge to the black brace so now I will never get the top corners cleaned up.....

Just had to vent, couldn't sleep, too angry about the tank.