Scott,
As a mosquito pilot, once you're sure you're in the field, use full
brake, maintain 50kts (if it's not too rough or windy, otherwise 55kts) and
leave the brakes fully out. When you flare, the time to do it is just AFTER you
want to, i.e. a couple of feet lower. Aim to touch down main and tailwheels
together. It works for me.

Hope this helps,

Simon.