Build the list from your accounts, find the brands that need you, and keep the accounts you open.
If you are a rep looking for lines, the useful question is not "which brands are hiring reps" but "which brands sell into the accounts I already walk into, and are not yet in them". That list is short, specific and worth more than any job board. This is how to build it, and how the protocol makes a brand's need for a rep visible.
A rep's asset is the relationship with the buyer, not the line. Walk your accounts and note what is on the shelf next to what is missing. A category the store carries but buys badly is a line you can place. A brand whose competitor is in every one of your stores is a brand that needs you. Make that list first; the brands come from it.
On the protocol, a brand profile says whether it is open to new reps and in which territories, and a brand with no rep in a live market has open City Pioneer seats next to it. Off the protocol, the signals are a brand exhibiting at a show without a rep on the booth, a brand whose stockist list is all in one region, and a brand that just raised and is hiring for "wholesale".
Your account list, honestly, with the buyers you actually know by name. Your current lines and why this brand does not compete with them. Your territory, and the cadence you call on it. A brand is deciding whether to hand you its accounts; the only thing that decides it is whether you already have the ones it wants.
The single most valuable thing a rep has is the account they opened. In the old model the brand owns it and the rep is replaceable. On the protocol, account ownership is recorded with the originator and the date, commission is computed at settlement from the recorded agreement, and a residual on accounts you opened is enforceable because it is a field, not a promise.