Tahm Kench: The Troll Support

I don't know about you guys, but every single time I've laned with Tahm Kench (given it's only been about 3-4 times throughout my League career), they end up spewing me into horrible situations. I've spent about 2-3 seasons trying to get my ADC game good, and it's definitely much. much better than it used to be. I can usually carry fairly well. But everytime I see someone lock in the Giant Frog, I instantly facepalm, expecting the worst. For all intents and purposes, he is a very good champ and can be extremely useful. However, I cannot exaggerate enough how irritating it is to be eaten by him just to end up dying as soon as he spits me out when I could've gotten away just fine on my own. I'd like to get some opinions together on how to change the ability in order for it to be even more useful. Maybe make it optional like taking Thresh's lantern? There can be an indicator on Tahm Kench signifying that he's ready to consume, or something like that. I hope there will be a fix to this situational problem.