Rookie free agent signing bonuses

by AdamJT13 from a sports forum:
Salary Cap Analyst

Update (5/10/08) -- After signing 13 undrafted free agents, we're now $3,548,534 under the cap. All of the UDFAs got a three-year deal except Joe West, who signed a one-year contract.

Here are their signing bonuses --

Danny Amendola $12,500
Marcus Dixon $12,000
Dowayne Davis $10,000
Andrew Atchison $9,000
Keon Lattimore $8,000
Daniel Polk $7,500
Mark Bradford $5,000
Julius Crosslin $4,000
Brandon Hale $3,000
Jay Ottovegio $1,000
Alain Karatepeyan (none)
Darrell Robertson (none)
Joe West (none)

I'm surprised that Robertson's contract is listed with no signing bonus, but it is. If I find out that he actually did get one, I'll update this information.

Our rookie pool reportedly is $4,095,120. Signing our UDFAs leaves $4,071,123 for the draft picks. Using all of our rookie pool would use up only $2,001,123 of cap room because of the Rule of 51.