Ill add one thing that has worked for me as well. I spend most my resources looking for deals off market. I come across a lot of stuff, some things seem pretty interesting but for whatever reason , not in pursuit of them. If the owner is willing , I will share a brokers information to pass them off to. Sometimes owners don't know who to call ( and you can see on this thread its easy to take the wrong step.....) so once you figure out who you feel is reputable get with them and pass them info.
This may give you an edge as @Ivan_ilych points out so you can get a competitive advantage where its needed.
Additionally, i think its extremely important , if a broker sends you a deal, give them specific reasons about why it doesn't work for you, what you don't like about it and have really defined parameters of what you are looking for.
Everyone is a looking for a 10 cap that is on city water and city sewer 100 dollar low lot rents, no POH 120spaces and up with 10 unoccupied lots.
Figure out a way to differentiate yourself from that group. Ie , i will look at smaller deals ( 20-50 spaces but really would like them to be on city utilities ( or the ability to connect onto city utilities if on private ( which means I will look at a deal on private utilities ) some POH are ok , some vacany is ok, i really am only interested in a handful of markets , can close cash , bankable for financing, have partners to source capital if needed for a bigger opportunity). Have a little experience etc etc.
That back story can give you an edge when being considered a purchaser of a property...... but its weird and memorable because even though you might consider that deal and be a good buyer for it, my story was more memorable and will come to find first.
Hopefully that helps some of you guys looking for deals.