There was a trend when i first started trading it of a slow daily decline in the index, where as last week it was the opposite with late day rallies.
So yes initially it was buy tvix in the am on the downward momentum, but last week that didnt work so well, but with the gradual upward momemtum it was time to play the xiv in the am. Sounds obvious now but at the time of course there was no way to know how the days would end.
My basic strategy for tvix right now is to take a position anytime the price is <9$, as i am pretty confident that before the greek election there will be more downward pressure on the markets, enough to push the price well over 10$. But between now and then i will continue to make plays on the daily ups and downs if i can make 5%. The downside of this is sellIng early in a potential rally for tvix on some really bad news.
Edit: Well I was right about TVIX going down more lol... closed at 8.09... down 5800$ lol