Guys,as a mostly cash (mid-high) player who ocasionally plays MTT's with ok results, i have several basic theory questions:

1) what are our considerations of should we rebuy or not and should we make addon or not in MTT?

i mean intuitively if we are confident we have positive EV at the table, have position on bigger stacks, than we should make a rebuy. Addon is also a default buy option for most players (esp. due to possibility to buy chips at a better price)

but what about extreme situations:

• should we double rebuy losing stack 1 minute before the rebuy period ends (seems like we lost most time and opportunities to make +EV plays on rebuy period)
• should we make an addon if we have extra small stack (<=1 bb f.e.) before addon option possible (it looks that even after buying addon our chances are small )
• should we make an addon if we managed to become a chipleader (when the addon compared to our stack looks insignificant)

p.s. i meant standard mtt's without crazy structure (like hyper turbo's where your goal could be to last till huge addon).

2) What about late registration, does it inevitably have negative impact of expected ROI ?

from my experience it is sometimes difficult and annoying to play deep/slow MTT's with several hundreds bbs at start. And registering with a smaller stack several hours later seemed to show quite ok results.

Again,my intuitive thoughts are that we miss opportunities when register later, and miss opportunity to play hands with weaker opponents who usually bust earlier, but still are these factors so significant that can make a late registration a minus EV decision when early registration had positive EV

i guess these questions are pretty basic but i posted it in mid mtt thread as i think they still could need some more deep knowledge and experience to answer.

Would be nice to see your answers or discussion any math based approach is very welcome )