Counting the Omer twice is sufficient.

Peace and blessings.
There is a well-known question regarding a person who is satisfied with which day he is standing and which count of the Omer he should count. Many later scholars claim that there is no meaning to the counting of doubt, so that one cannot count: "Today is four days for the Omer, today is five days for the Omer," and conclude from what one wishes. In their opinion, the counting is a clarification and not a statement in vain, and a counting of sufficient is not a counting of the number (Shaarei Yosher, Devar Avraham, Devar Menachem Besham Chay' Ha-Raim, and more).
On the other hand, many of the latter actually decided against this explanation due to indirect proof from "Baal HaMaor" (Pesachim 28. On the pages of the Rif). He asks why we did not fix the counting of the Omer twice in our time abroad because of the daily counting, and answers so that they would not come to disparage the Yom Taw when they count the Omer. The fact that he did not answer that there is no concept of a sufficient counting proves that in his opinion it is possible in principle to count twice, and someone who is on the road and does not know what day it is should count twice (and this view should be challenged).

1. What do you think, in principle, is it possible to count twice enough?
2. What do you think about the evidence from the BAM, is it correct?