If I was in your shoes, I'd be doing a block of training to improve my 5 minute power. If you are able to do 5w/kg for 5 mins now (at a guess, I can't remember just how rediculously light you are), aim to get it to 5.5 and I bet you'd be able to stay with that group that drops you on the first climb.
that is what i want to do and am trying to achieve. problem is, i just cannot do 4/5 x 5min hard efforts on a turbo. i just cannot get the power out indoors. so am trying to focus on specific efforts when outdoors. will be getting onto hill reps when weather is better
If I was in your shoes, I'd be doing a block of training to improve my 5 minute power. If you are able to do 5w/kg for 5 mins now (at a guess, I can't remember just how rediculously light you are), aim to get it to 5.5 and I bet you'd be able to stay with that group that drops you on the first climb.