I'm doing really well with voting bots. I just found them a couple of weeks ago and now I'm doing them on all my posts. But I don't do them for the trending page. I do them later in the time of the posts. I'm doing bid bots to:

• Reward my other voters with curation rewards - it is worth it for regular people to vote for me now!
• Increase my sp - this is huge win as you say
• Make sbd - I am paying my living expenses now!

Your strategy of going in at the last minute with big bids is not good in my opinion and I wrote about it in this post I'm linking. The main reason is - the bids your are making are huge compared to average.

Where you go at the last minute - I would not go. Too much risk at that point for me!

I would love to see you try my ideas along with the others that you are doing.
https://steemit.com/howto/@fitinfun/are-you-a-bid-bot-crusher

Also - you should have steemit in you your tube "about" :)