Use continuous variables.

As much as pos­si­ble, cre­ate maps where the infor­ma­tion is not only pres­ence or absence. Sev­er­al results will not have a sim­ple yes/no dis­tri­b­u­tion, but can be based on the prob­a­bil­i­ty of occur­rence or be described in terms of mag­ni­tude, den­si­ty, etc. The more infor­ma­tion includ­ed in rel­e­vant data lay­ers, the more use­ful it will be for spa­tial targeting.