I use this for prospecting in conjunction with the Targetless plugin. Saves a ton of time. Adv Scanner and fast ship recommended.

alias roidscan2 "wait 1 'roidscan1'; unroid"
alias roidscanoff "alias roidscan1 'echo Roid Scanning Disabled'; alias roidscan roidscanon"
alias roidscanon "alias roidscan1 roidscan2; echo 'Roid Scanning Enabled'; roidscan1; alias roidscan roidscanoff"
alias roidscan roidscanon

bind L roidscan

Thank you, Earthshine! I'm loving being able to toggle asteroid scanning on and off!

Oh, also, after playing around with it a bit more, I find setting the wait to 3 works a bit better for me, and doesn't bog things down so much...