Perception "roll off" question

[GMDijarian]

OK, annoyed because i typed this up and when i clicked "submit" the page errored and my my message is gone even if I use the "back" button on my browser.

I'll keep it short and sweet.
See page 179.

Would you perform the "roll off" when Carl's character is successful with his prowl roll?

I can see this happening because it adds an additional element of suprise to the situation if the guard gets that gut feeling his being watched and wins the "roll off" and turns around and catches the PC sneaking up on him.

Just after everyone elses thoughts.

P.S. Copy and pasting this message before i hit the submit icon.

i would yes, just use Carls percentage to prowl as a modifier to the roll off. ie. if Carl had prowl at 40% give him a +4. Alsothough, remember the guard may have detect ambush, or a perception check...

just what id think of...if Carl is successful, i prolly wouldnt give a modifier to the guard..

[rat_bastard]

I do perception as Intelligence + Mental affinity +3%/level and with a +5% for every +1 you would normally get.

there, now its a percentage skill, and can be rolled directly against prowl, palming and concealment.