OK, I have decided that my actual standard of play throughout the run is definitely acceptable to me and is pretty much my best. The only thing which would make me consider doing the run again is a change in level strats which would lead to a significant difference in time.
HTIC: I did see the record strat and I didn't use it as it is too risky, also if you do do it, you have to build very carefully and by the time you have done that it is like 50 odd seconds (I just tried it again to check). So my strat is what I deemed best, I got unlucky but that I even managed to salvage what was a dodgy wobbling structure was quite good I think. I conclude I was very unlucky on that level as I did my strat pretty much exactly, obviously the physics engine decided to screw me over.
BATET: I have tried the time bug method a lot of times to try and get it consistent but it was less than 1 in 3. Boosting the beauty is VERY hard, at least I find it very hard and so my method is all that was available to me and it went perfectly in this run.
RPS: Boosting a triangle to the top I find very hard and just imagine if you mess up the boosting even just a little bit, by the time you get it to the top it would have taken longer. Its so easy to think you can do it but in a single segment run it all changes. I just tried HTIC and it took me a few attempts to get using either strat.
So I think I will stick with that run as there was so much good stuff in it and so much luck. My previous best attempt was using 3 retries! Just for an interesting story of how much luck there is, I was on the third wheel, I got the structure on the 3rd wheel perfectly then I was taking the green goos off the structure to save some time and there just so happened to be a time bug there which I clicked on, incredibly unlucky. That accidental click on a bug I couldn't really even see cost me over a minute! I think trying to improve this run would be too hard, there would be too much pressure. Upper shaft went amazing, the final level on chapter 3 went amazing (1st goo caught fire and landed in best possible place on the structure) and I could go on. So thanks for all your help guys, I hope you enjoy this run and good luck with all the IL improvements. Feel free to submit them to SDA, would be good