Deadlift assistance

My deadlift isn't very high right now compared to my other lifts (only 1.7xBW) because I have trouble with the first half of the lift, so I figure I need to add some assistance work. I have two lower body days, squats both days, deadlifts only on one of them so I don't burn myself out. The other lower body day is where I want to add the assistance work.

There's obviously SLDL, RDL, Goodmornings, and Rack Pulls, but those seem to help with the upper half of the lift, which is not where I need the help.

So I'm thinking either Speed deads or deficit deads to aid the bottom half of the lift. Which do you think would help my deadlift more? Speed pulls focus on speed and are a lighter weight, so I'm less likely to burn myself out, but doing deficit certainly has its advantages.

Thanks Soc and Merc! Very interesting material!

I always reset, otherwise I'd probably end up doing something that looks way too much like a SLDL.

Bottom part of the lift is primarily hamstrings and low back. So anything to strengthen those areas..

Glute Hams, Reverse Hypers, Seated Goodmornings for low back, Standing Goodmornings for low back and hamstrings. Would probably be some of the best exercises.
If you've been having trouble for awhile, possibly try switching to sumo for a couple weeks and go back to pulling conventional, or the other way around of course.

Speed deadlifts are a great help to (obviously) help you pull faster, just make sure you do them correctly, most people assume you just lower the weight and thats it, and they are still at 70% 1rm, which afaik isn't the most beneficial way, although Westside for example did used to do it this way.
They do it with 30-55% 1rm, 20-45 seconds rest and generally 10sets of 3.

This is your main lift for that day, don't do speed work and then regular deadlifts or something, you will feel pretty damn tired anyway if you did it properly. Dynamic and Maximum effort are done on different days for a reason.

Also for your assistance work, generally it's accepted to keep the reps a little higher, say 6-8 rather than singles or triples.

Edit; Almost forgot; http://www.wannabebig.com/training/deadlift-5-plates-like-a-champion/

Excellent article Alsavier! It will definitely help!

You can try 1/4 deadlifts, 1/2 deadlifts deadlifting from the floor to break this plateau.

deadlift from a box/platform will help your beginning of a normal deadlift.

Dietmar Wolf (Norwegian national coach) suggest this, and so does all the longtime active lifters at my gym.

Use a 5-10cm platform like a weight plate

the blue 20kgs are often used at my gym