Also final challenges are normally more than simply another endurance challenge aren't they? That's what I'm used to in the US one. So if they had followed that and had them having to scramble about quickly over obstacles to collect things or throw stuff or solve a puzzle Kristie may have been even more up against it (like she was in the penultimate challenge where she was last).
...I have to be honest here... I truly believe that Kristie didn't quite 'throw' every challenge that she had been in all the way through this season but I don't think she minded at all if she lost them all... until the last one... by not winning any she remained in the background and was not seen as a threat to anyone... in fact... it seemed as if people forgot that she was even in the game until towards the end where her votes started to count because of her blending so well into the jungle... even when she 'accidentally' won the 'letters from home' challenge she handed it over to Matt just so that she was still not seen as a threat in my opinion...
...a few people have said in the media and on websites that she was talking shit at the final show and was twisting around the facts at how it all played out and that she twisted her 'game play strategy' around the facts of what happened to make it sound better for herself to the Jury but I'm not so sure... whereas we were all saying "why the hell did she vote out such and such and keep in so and so?"... (myself being one of those people)... I really believe now in hindsight that she was way ahead a lot of us because of her being such a devoted fan of Survivor that she had her gameplan mapped out before she even went in there to be honest... I mean... having "watched it since she was 8 years old" I think that she knew well ahead of time what she was going to do if she ever got onto the show somehow...
...yes she did take a risk in 'throwing' all of the previous challenges to save all of her mental and physical strength for the final challenge but she was clever enough to realise that both El and Lee had worn their bodies out in trying to win each and every other challenge on the way... she would've known that Lee's knees were letting him down towards the end before the challenge and that El's strength was just about sapped out (which was proved when she fell first) and would've been hoping that yes... maybe physically they both may had beaten her in a racing and strength challenge but would've caught up and won the puzzle part of it in the end because both Lee and El are not quite the most clever people when having to use their brains (this was quite evident in that 'Family Feud' episode that I watched on Sunday night) whereas Kristie was...
...as it turned out Kristie must have been in Blue Heaven when they turned up and saw what kind of challenge that it was... no running... no puzzle... just pure grim determination and stamina which both Lee and El were at the end of because of trying to win every other challenge... she knew that it was all or nothing in that last challenge... as Melore said above...
She took up yoga in preparation for going on Survivor, I read somewhere. People seem to think yoga is just about being flexible? It's made me very strong in surprising ways, and I am lame at it! You could see her using her balance skills to hold very extreme opposing positions to stretch the muscles out, while Lee was basically stuck in the one leaning forward position toughing it out. Both in great pain.
...that pre-show preparation helped prove to me that she probably pre-planned 'not to win' those challenges all the way through the series... and with her 'pleading' ploy at the end (even though Lee probably never heard a single word she said) that was a stroke of genius as far as she was concerned... she gave it her all... she won it... Lee never stepped down... he fell down... she was the worthy winner in the end even if she wasn't the most entertaining all through the series but hey... all of those 'entertaining' ones such as Des/Evan/Rohan/Craig/Conner/Phoebe and Nick (just to mention a few for me personally) went out pretty quick fast because the clique felt so threatened by them.. Kristie made sure that she wasn't 'entertaining'... that showed to me that she was smarter than all of them in a lot of ways... all kudos go to Kristie alone in my books... her gameplay and strategies (even though they didn't make any sense whatsoever to us and mostly relied on pure blind luck) were in the end brilliant regardless of whether being planned out or not... all credit to Kristie for winning it... just saying... cheers.

