I use the sled because most hills that I have access to are wet, slippery, uneven, varying in slope and many other related problems. We still do hills, but at lower intensities because of the slipping problem. We also do many drills and bounds on the hills.
With a sled, we get a similar effect in terms of resistance, but we can stay on the uniform track surface and use spikes effectively, even on a rainy day.
I haven’t used a weight vest for track work.
I have nothing against sleds. Actually would like one.
I coach using the KISS approach, therefore I try to use what I have. I have access to various hills (including terrain and angles).
Sled loads the horizontal plane.
Weight vest loads the vertical plane.
Hills load both.
Now the real question is: what happens if you do hills with a weight vest towing a sled?
The answer is: you get insulted on message boards.
Why not just put on a medieval suit of armour if your going to go that far, it would make more sense to me.
haha, i just remembered, my best progressive improvement using a sled:-
200m in 30.40 towing a flat bottomed sled (higher resistance v’s the tracked version) on grass with 15kg load, technique lasted good up untill 10or15m to go. Would have lost 1.5-2sec at least in that last 10m… man did i slow, it didnt happen gradualy, it happened all at once, tis like hitting a brick wall, or, some darn Bear standing on the sled 
Interesting case! Although it seems to me to be the exception, it also appears to be more resistance of the endurance type, rather than that more frequently mentioned here (i.e., up to 30 m).
I am planning to use the latter form closer to races (60 m) vs. last season: for this “feeling” that some athletes seem to believe in and to shorten the gap from first application. We’ll see…
A comment/question after “popeqique’s” post: could you not use short resistance running on grass as a transition phase from hill running to track acceleration work?
Answer: You become a guru and write for bodybuilding mags.
(actually, sleds are also an indoor answer to hills)
would you use them during the indoor season?
No no - you start at the top of the hill and jump on the slep at the top of the hill with the weighted vest. Have a ramp at the bottom to throw you off then you have a method of overspeed!! yeah
Nice.
Man a little bit off the subject but I just received a letter saying I have been nominated to the “International Laurete Scholars Program.”
What exactly is this? Anyone know. I guess I was picked out of the people who made the
Who’s, Who, on the National Dean’s list??? Last years edition.
All these honors I have won, you would think “The Guy” is almost smart, little do they know, I can barely spell my own name.
And we know that you cannot spell “laureate,” either. 
LOL your right. Wow thats sad.
It looks like to officially be a member I would have to attend a conference in China, Europe, India, South Africa, or Australia.
I hope they are willing to pay for my plane flight there!
Edit: I tried to give myself negative reputation points, it didn’t work!
Tim Lane where did you go to school?
Who’s who means shit.
And it isn’t related to sleds, either.
Alright lets get back to sleds. Just to let you know the who’s, who for the Dean’s list means you made Deans list a certain number of times in a row, at a certain GPA, then it is selected by teachers,ect. It doesn’t really mean anything, neither does school in my opinion. Neither does the National Honor’s society. As for sleds though… Are you all talking about pushing sleds or pulling sleds, and what models are you using. Wouldn’t pushing sleds as Boyle has in his video completely take the arms out of the actually sprinting action.
If you go to Australia they have some feisty barmaids there. Check out Off Topics/Discussion thread CF Forum.
Kitkat, now thats what I call functional
training.
-GUY
http://www.charliefrancis.com/community/showthread.php?t=16884
It doesn’t mean shit if you made dean’s list at some joke school. You’re from boston… I’m sure folks that get on the dean’s at Babson and Wheaton have a much easier time than those that get on the dean’s list at MIT. You should know this and if you do, why bring up who’s who? The only people that actually reference it are idiots.
I heard Harvard and MIT are easy, once you get in! JK.
I don’t go to Babson but Babson is considered one of the best schools in the Boston area. And Wheaton has a solid reputation also. BTW my father went to MIT. Ok, MR.19 year old. Do you have any idea what you are talking about?
Just to let you know also, to make the National Deans list, the odds against it are very high, statistically speaking, if you do, you make up about 1/2 of 1 percentage point of all college students. Not that it matters. I was referencing it because it was from that list that I won the other award from. Either way, do you have anything to offer about sleds?
THE GUY.
Sleds uphill. Look at how ridiculous this looks.
http://www.youtube.com/watch?v=hfuAwYTqFUU
Even more laughable…(Read description first)
We utilize sleds for various purposes.
On linear days we will use sled for acceleration drills with the traditional 10% rule. Furthermore we use sled as a posterior chain / hip dominant strength movement. We begin with a weight that can be handled with the body somewhat upright posture and progress to a heavier sled that requires athlete to get lower into crawling posture. Some coaches claim that this use of the sled may lead to biomechanical-technical faults in running mechanics…thank god i’m not training olympic sprinters!