have'nt heard much on the sef coils-maybe i took too long a break..i am a little undecided between the sef 10x12 and the 10x14 double d.i love the dbl d and have the 4.5x7.that coil is deep and very stable.anyone on this forum have the two different coil and tried them side by side???what opinion have you on the sef?? i realize the larger size could be deeper seeking ,,but the 15x18 might whip-up on this old feller at 75 yrs.old.your thinking on this greatly appreciated..sovxs,se..

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