The motion of compressing your fork is important for lift, but the more important part of landing on your rear wheel instead of your front is get our weight WAY back off of your seat. Some people practically drag their butt on the tire - I am not that flexible, but what I think is happening to you is

that in your effort to weight your front fork you are weighting the front of your bike as well and not getting your butt shifted fast enough to get the weight over the rear end of the bike. Don't know how big the drop is, but maybe try not weight the fork at all - just get up a little head of steam, get way back off the saddle, relax your arms , ie. lots of bend in the elbows and you will probably land with more weight on the rear tire.

spoke