No. That’s not a good strategy at this point in the game.
The left are doing quite well at exposing themselves for what they are right now. Let them play their game.
I think that in legal terms, the argument would rest on the terms and conditions of entry to a Trump rally. Freedom of association would come into play more than freedom of speech. It is really freedom of association that the protesters attempt to deny other citizens when they disrupt a rally.
Now if the rally is free to all comers and there are no tickets or conditions, then what any given person does in the event is pretty much up to their free will and if they break a law (let’s say by robbing or assaulting somebody) then that has nothing much to do with the Trump organization and its rights. However, if the Trump people sell tickets for a nominal fee and attach conditions such as the undertaking to maintain peace and good order, then protesters who break those terms are in breach of a legal contract or else perhaps they gained unauthorized entry.
As to disruptions outside rallies of any candidate on the public streets and spaces, that is a matter for the police to determine appropriate levels of response and proactive security. I imagine that in the real world this is done in consultation with event organizers but it could be done entirely independently too. If a clump of protesters were trying to block access to walkways into a stadium or parking lots, then this would not really require much contact with event organizers, the solution readily suggests itself.
I haven’t been to a Trump rally but some television coverage suggests to me that he tends to spend a bit too much time in the “watch what those guys are doing” mode which might become a bit tedious after a while when all those guys are doing is milling around with a few signs almost out of view. But of course it’s his call what to do at his events. I would advise him to recognize that media coverage of rallies tends to focus on short clips for news and analysis shows, and you need to have sound bites of policy available to reach swing voters who wouldn’t probably consider attending events.
Trump can only lose to Hillary Clinton if he fails to communicate basic policy alternatives. So that’s all he really should be trying to do at this point. Saying that he doesn’t appreciate the efforts of radical leftists to disrupt his events will probably not change the votes of even one per cent of the electorate — they have already crossed that bridge at some point in one direction or the other.