Methods of rigging with Gambli and what have you caught with Gambli or squid

[Tatanka]

I believe that squid is more effective than shrimps. At least it will avoid from coming off the hook because small fish will not manage the rip it off the hook. But when reading your question you seem to nwant something that you can leave in the car just in case. The best bait that you can use would be if you have a small bucket with a some small holes in the lid & collect some snails ( Bebbux). They will last for days but keep an eye every now & then to see if there is any dead ones as they will not release a pleasant smell.