Deer seem to be attracted to this fungi so you may find many fresh samples partially eaten or grossly disturbed. The base of the stipe should be white and firm. Be sure to discard any which look gelatinous. Trim excess dirt and soggy parts in the field. A little extra care taken while collecting really pays off in the final cleaning process.
Corals seem to absorb water more than other mushrooms.
Try spreading news paper and still, without using any water, give them another trimming and tapping. If you don't have a spray attachment at your sink, get chummy with a friend or neighbor who does have one. Hold the clump, tips down. Use the spray with as much force behind it as water pressure will allow. Drain thoroughly with the tips down.